APA (7th ed.) Citation

Watterson, B. (1997). O essencial de Calvin & Hobbes. Gradiva.

Chicago Style (17th ed.) Citation

Watterson, Bill. O Essencial De Calvin & Hobbes. Gradiva, 1997.

MLA (8th ed.) Citation

Watterson, Bill. O Essencial De Calvin & Hobbes. Gradiva, 1997.

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