Παραπομπή APA

Round, F. E. (1969). Introduction to the lower plants. Butterworths Publishers.

Παραπομπή Chicago Style

Round, F. E. Introduction to the Lower Plants. London: Butterworths Publishers, 1969.

Παραπομπή MLA

Round, F. E. Introduction to the Lower Plants. Butterworths Publishers, 1969.