APA (7th ed.) Citation

Thomson, J. S., Petersham, M. F., & Petersham, M. (2008). Fil and Filippa Story of Child Life in the Philippines. Project Gutenberg.

Chicago Style (17th ed.) Citation

Thomson, John Stuart, Maud Fuller Petersham, and Miska Petersham. Fil and Filippa Story of Child Life in the Philippines. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Thomson, John Stuart, et al. Fil and Filippa Story of Child Life in the Philippines. Project Gutenberg, 2008.

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