Gaya APA
Wale, S. et al
(2008).
Diseases, Pests and Disorders of Potatoes: a Colour Handbook
.
London:
Manson.
Gaya MLA
Wale, Stuart. et al.
"Diseases, Pests and Disorders of Potatoes: a Colour Handbook".
London:
Manson,
2008.
Computer File.