APA (7th ed.) Citation

Scarpa, J., Lewis, D. H., McMurray, D. N., Neill, W. H., & Robinson, E. H. (1989). Dietary zinc and calcium requirements of channel catfish fry and effects of zinc and calcium on immunocompetence.

Chicago Style (17th ed.) Citation

Scarpa, John, Donald H. Lewis, David N. McMurray, William H. Neill, and Edwin H. Robinson. Dietary Zinc and Calcium Requirements of Channel Catfish Fry and Effects of Zinc and Calcium on Immunocompetence. 1989.

MLA (9th ed.) Citation

Scarpa, John, et al. Dietary Zinc and Calcium Requirements of Channel Catfish Fry and Effects of Zinc and Calcium on Immunocompetence. 1989.