Παραπομπή APA

Lepp, N. W. (1981). Effect of heavy metal pollution on plants. Applied Science Publishers.

Παραπομπή Chicago Style

Lepp, N W. Effect of Heavy Metal Pollution on Plants. London: Applied Science Publishers, 1981.

Παραπομπή MLA

Lepp, N W. Effect of Heavy Metal Pollution on Plants. Applied Science Publishers, 1981.