Παραπομπή APA

Hartmann, H. (1981). Plant science growth,development and utilisation of cultivated plants (2.). Prentice - Hall Inc.

Παραπομπή Chicago Style

Hartmann, H.T. Plant Science Growth,development and Utilisation of Cultivated Plants. 2. New Jersey: Prentice - Hall Inc, 1981.

Παραπομπή MLA

Hartmann, H.T. Plant Science Growth,development and Utilisation of Cultivated Plants. 2. Prentice - Hall Inc, 1981.