Gaya APA

Asher,c.J, ., Edwards,D.G, . (1981). Hydroponics for Beginners (2nd). Queensland: Department of Agriculture University of Queensland.

Gaya MLA

Asher,c.J, ., Edwards,D.G, . "Hydroponics for Beginners". 2nd Queensland: Department of Agriculture University of Queensland, 1981. Text.