Gaya APA
Crop production: principles and practices. (1953).
New York:
Prentice-Hall of India.
Gaya Chicago
Crop production: principles and practices.
.
New York:
Prentice-Hall of India,
1953.
Buku.
Gaya MLA
Crop production: principles and practices.
.
New York:
Prentice-Hall of India,
1953.
Buku.
Gaya Turabian
Crop production: principles and practices.
New York:
Prentice-Hall of India,
1953.
Buku.