APA (7th ed.) Citation

Jackson, H. H. (2006). A Calendar of Sonnets. Project Gutenberg.

Chicago Style (17th ed.) Citation

Jackson, Helen Hunt. A Calendar of Sonnets. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Jackson, Helen Hunt. A Calendar of Sonnets. Project Gutenberg, 2006.

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