APA (7th ed.) Citation

ScienceDirect (Online service) & Williamson, R. (1981). Genetic engineering. Academic Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service) and R. Williamson. Genetic Engineering. London ; Orlando: Academic Press, 1981.

MLA (9th ed.) Citation

ScienceDirect (Online service) and R. Williamson. Genetic Engineering. Academic Press, 1981.

Warning: These citations may not always be 100% accurate.