APA (7th ed.) Citation

Lagerlöf, S., & Howard, V. S. (2004). The Emperor of Portugallia. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lagerlöf, Selma, and Velma Swanston Howard. The Emperor of Portugallia. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Lagerlöf, Selma, and Velma Swanston Howard. The Emperor of Portugallia. Project Gutenberg, 2004.

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