APA (7th ed.) Citation

ScienceDirect (Online service), Wingard, L. B., Katzir, E., & Goldstein, L. (1976). Immobilized enzyme principles. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), Lemuel B. Wingard, Ephraim Katzir, and Leon Goldstein. Immobilized Enzyme Principles. New York: Academic Press, 1976.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Immobilized Enzyme Principles. Academic Press, 1976.