The past tense of take a leaf out of someone's book is took a leaf out of someone's book.
The third-person singular simple present indicative form of take a leaf out of someone's book is takes a leaf out of someone's book.
The present participle of take a leaf out of someone's book is taking a leaf out of someone's book.
The past participle of take a leaf out of someone's book is taken a leaf out of someone's book.