APA (7th ed.) Citation

Gathering 4 Gardner (Conference), Pegg, E., Schoen, A. H., & Rodgers, T. (2009). Homage to a pied puzzler. A K Peters.

Chicago Style (17th ed.) Citation

Gathering 4 Gardner (Conference), Ed Pegg, Alan H. Schoen, and Tom Rodgers. Homage to a Pied Puzzler. Wellesley, Mass.: A K Peters, 2009.

MLA (9th ed.) Citation

Gathering 4 Gardner (Conference), et al. Homage to a Pied Puzzler. A K Peters, 2009.

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