APA (7th ed.) Citation

Versfeld, R. (1990). Porque existe fome? Asa.

Chicago Style (17th ed.) Citation

Versfeld, Ruth. Porque Existe Fome? Asa, 1990.

MLA (8th ed.) Citation

Versfeld, Ruth. Porque Existe Fome? Asa, 1990.

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