APA (7th ed.) Citation

ScienceDirect (Online service), Altschul, A. M., & Wilcke, H. L. (1981). New protein foods. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Aaron M. Altschul, and Harold L. Wilcke. New Protein Foods. New York ; London: Academic Press, 1981.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. New Protein Foods. Academic Press, 1981.