take a leaf out of (one's) book

take a leaf out of (one's) book

To do something in the way someone else would do it; to behave or act like someone else. I think I'm going to take a leaf out of your book and start going for a run first thing in the morning.
See also: book, leaf, of, out, take
Farlex Dictionary of Idioms.

take a leaf out of someone's book

 and take a page from someone's book
Fig. to behave or to do something in a way that someone else would. When you act like that, you're taking a leaf out of your sister's book, and I don't like it! You had better do it your way. Don't take a leaf out of my book. I don't do it well.
See also: book, leaf, of, out, take
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

take a leaf out of someone's book

Imitate or follow someone's example, as in Harriet took a leaf out of her mother's book and began to keep track of how much money she was spending on food . This idiom alludes to tearing a page from a book. [c. 1800]
See also: book, leaf, of, out, take
The American Heritage® Dictionary of Idioms by Christine Ammer.

take a leaf out of someone's book

or

take a leaf from someone's book

COMMON If you take a leaf out of someone's book or take a leaf from their book, you copy them, usually because they were successful when they acted in that way. Note: The `leaf' in the last two expressions is a page of a book. Hollywood celebs should take a leaf out of Michael Douglas's book and make sure their websites are interesting and attractive. You're working too hard. Take a leaf from my book and relax!
See also: book, leaf, of, out, take
Collins COBUILD Idioms Dictionary, 3rd ed.

take a leaf out of someone's book

closely imitate or emulate someone in a particular way.
1999 London Student Maybe the other colleges should take a leaf out of Imperial's book and try pub games instead of sports.
See also: book, leaf, of, out, take
Farlex Partner Idioms Dictionary

take a leaf out of somebody’s ˈbook

follow somebody’s example because you admire them and their way of doing something: If you’re having difficulty with the children, take a leaf out of Sandra’s book. She knows how to control them.
Leaf is an old word for a page.
See also: book, leaf, of, out, take
Farlex Partner Idioms Dictionary
See also:
  • (someone) is not going to thank you for (something)
  • get going with
  • go (out) with (someone)
  • go out with
  • go with
  • Everything’s going to be okay
  • everything's going to be OK
  • chubbo
  • go for (something)
  • go for it