APA (7th ed.) Citation

Bok, E. W., & Haney, J. L. (2005). A Dutch Boy Fifty Years After. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bok, Edward William, and John Louis Haney. A Dutch Boy Fifty Years After. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Bok, Edward William, and John Louis Haney. A Dutch Boy Fifty Years After. Project Gutenberg, 2005.

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