APA (7th ed.) Citation

Waterson, B. (1999). Parabéns Calvin & Hobbes. Gradiva.

Chicago Style (17th ed.) Citation

Waterson, Bill. Parabéns Calvin & Hobbes. Gradiva, 1999.

MLA (8th ed.) Citation

Waterson, Bill. Parabéns Calvin & Hobbes. Gradiva, 1999.

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