APA Style

Primrose, R, W, O, S, B. (1994). Principles of Gene Manipulation: An Introduction to Genetic Engineering (4th. ed). Oxford, United Kingdom: Blackwell Science Ltd..

MLA Style

Primrose, R., W., Old;, S., B.. "Principles of Gene Manipulation: An Introduction to Genetic Engineering". 4th. ed Oxford, United Kingdom: Blackwell Science Ltd., 1994. Text.