APA (7th ed.) Citation

Anne Merrick. (1994). Someone Came Knocking (1st.). Puffin Books.

Chicago Style (17th ed.) Citation

Anne Merrick. Someone Came Knocking. 1st. UK: Puffin Books, 1994.

MLA (9th ed.) Citation

Anne Merrick. Someone Came Knocking. 1st. Puffin Books, 1994.

Warning: These citations may not always be 100% accurate.