Παραπομπή APA

Greenwood, N. N., & Earnshaw, A. (1989). Chemistry of the elements.

Παραπομπή Chicago Style

Greenwood, N N., και A. Earnshaw. Chemistry of the Elements. Oxford : Pergamon press, 1989.

Παραπομπή MLA

Greenwood, N N., και A. Earnshaw. Chemistry of the Elements. 1989.