APA (7th ed.) Citation

Conkling, H., & Lowell, A. (1999). Poems By a Little Girl. Project Gutenberg.

Chicago Style (17th ed.) Citation

Conkling, Hilda, and Amy Lowell. Poems By a Little Girl. Project Gutenberg, 1999.

MLA (9th ed.) Citation

Conkling, Hilda, and Amy Lowell. Poems By a Little Girl. Project Gutenberg, 1999.

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