Παραπομπή APA

Roberts, M. B. V. (1974). Biology: A functional approach. Thomas Nelson and sons.

Παραπομπή Chicago Style

Roberts, M. B. V. Biology: A Functional Approach. London: Thomas Nelson and sons, 1974.

Παραπομπή MLA

Roberts, M. B. V. Biology: A Functional Approach. Thomas Nelson and sons, 1974.