APA (7th ed.) Citation

Allen, N. K., & Undercuffler, G. (2010). Happy birthday: The story of the world's most popular song. Pelican.

Chicago Style (17th ed.) Citation

Allen, Nancy Kelly, and Gary Undercuffler. Happy Birthday: The Story of the World's Most Popular Song. Gretna, La.: Pelican, 2010.

MLA (8th ed.) Citation

Allen, Nancy Kelly, and Gary Undercuffler. Happy Birthday: The Story of the World's Most Popular Song. Pelican, 2010.

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