APA (7th ed.) Citation

Senning, C. P., Post, P., & Björkman, S. (2008). Emily's Christmas gifts. Collins.

Chicago Style (17th ed.) Citation

Senning, Cindy Post, Peggy Post, and Steve Björkman. Emily's Christmas Gifts. New York: Collins, 2008.

MLA (8th ed.) Citation

Senning, Cindy Post, et al. Emily's Christmas Gifts. Collins, 2008.

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