APA (7th ed.) Citation

Pessoa, F. A. N. (2006). 35 Sonnets. Project Gutenberg.

Chicago Style (17th ed.) Citation

Pessoa, Fernando António Nogueira. 35 Sonnets. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Pessoa, Fernando António Nogueira. 35 Sonnets. Project Gutenberg, 2006.

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