APA (7th ed.) Citation

Wiggin, K. D. S., Stephens, A. B., & Wyeth, N. C. (2010). Susanna and Sue. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wiggin, Kate Douglas Smith, Alice Barber Stephens, and N. C. Wyeth. Susanna and Sue. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Wiggin, Kate Douglas Smith, et al. Susanna and Sue. Project Gutenberg, 2010.

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