APA (7th ed.) Citation

Montgomery, F. T., & Higgins, V. M. (2008). Zip, the Adventures of a Frisky Fox Terrier. Project Gutenberg.

Chicago Style (17th ed.) Citation

Montgomery, Frances Trego, and Violet Moore Higgins. Zip, the Adventures of a Frisky Fox Terrier. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Montgomery, Frances Trego, and Violet Moore Higgins. Zip, the Adventures of a Frisky Fox Terrier. Project Gutenberg, 2008.

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