APA (7th ed.) Citation

Birney, B. G. (2013). Winter according to Humphrey. Puffin Books.

Chicago Style (17th ed.) Citation

Birney, Betty G. Winter According to Humphrey. New York: Puffin Books, 2013.

MLA (8th ed.) Citation

Birney, Betty G. Winter According to Humphrey. Puffin Books, 2013.

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