Ballantyne, R. M., & Pearson. (2007). Under the Waves: Diving in Deep Waters. Project Gutenberg.
Chicago Style (17th ed.) CitationBallantyne, R. M., and Pearson. Under the Waves: Diving in Deep Waters. Project Gutenberg, 2007.
MLA (9th ed.) CitationBallantyne, R. M., and Pearson. Under the Waves: Diving in Deep Waters. Project Gutenberg, 2007.
Warning: These citations may not always be 100% accurate.