APA (7th ed.) Citation

Chen, P. S., & Chen, H. D. (1956). Soybeans for health, longevity and economy. The chemical elements.

Chicago Style (17th ed.) Citation

Chen, Philip S., and Helen D. Chen. Soybeans for Health, Longevity and Economy. South Lancaster: The chemical elements, 1956.

MLA (9th ed.) Citation

Chen, Philip S., and Helen D. Chen. Soybeans for Health, Longevity and Economy. The chemical elements, 1956.