APA (7th ed.) Citation

Sagrera, M. (1990). Population crisis. Grafics Rafer.

Chicago Style (17th ed.) Citation

Sagrera, Martin. Population Crisis. Grafics Rafer, 1990.

MLA (8th ed.) Citation

Sagrera, Martin. Population Crisis. Grafics Rafer, 1990.

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