Gaya APA
WALKER,Jhon Charles. (1957).
Plant Pathology (3nd.ed.).
New York:
McGraw - Hill Book Company.
Gaya Chicago
WALKER,Jhon Charles.
Plant Pathology.
3nd.ed.
New York:
McGraw - Hill Book Company,
1957.
Teks.
Gaya MLA
WALKER,Jhon Charles.
Plant Pathology.
3nd.ed.
New York:
McGraw - Hill Book Company,
1957.
Teks.
Gaya Turabian
WALKER,Jhon Charles.
Plant Pathology.
3nd.ed.
New York:
McGraw - Hill Book Company,
1957.
Teks.