APA (7th ed.) Citation

Osvald, H. (1966). The earth can feed us. A.S. Barnes.

Chicago Style (17th ed.) Citation

Osvald, Hugo. The Earth Can Feed Us. South Brunswick [N.J.]: A.S. Barnes, 1966.

MLA (9th ed.) Citation

Osvald, Hugo. The Earth Can Feed Us. A.S. Barnes, 1966.