Cita APA (7a ed.)

Hudson, A., Amero, R. W., & Gordon Garrison, R. (2004). Balboa park: The best sights and how to photograph them. Photo Tour Books.

Cita Chicago Style (17a ed.)

Hudson, Andrew, Richard W. Amero, y Ron Gordon Garrison. Balboa Park: The Best Sights and How to Photograph Them. San Diego, Calif.: Photo Tour Books, 2004.

Cita MLA (9a ed.)

Hudson, Andrew, et al. Balboa Park: The Best Sights and How to Photograph Them. Photo Tour Books, 2004.