APA (7th ed.) Citation

Clark, i. A., & Clark, D. (2009). Números. Porto Editora.

Chicago Style (17th ed.) Citation

Clark, il. Anna, and Daniel Clark. Números. Porto Editora, 2009.

MLA (8th ed.) Citation

Clark, il. Anna, and Daniel Clark. Números. Porto Editora, 2009.

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