APA (7th ed.) Citation

Wolf, M., & Emshwiller, E. (2010). The First Day of Spring. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wolf, Mari, and Ed Emshwiller. The First Day of Spring. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Wolf, Mari, and Ed Emshwiller. The First Day of Spring. Project Gutenberg, 2010.

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