Gaya APA
POEHLMAN, J, M., SPEPER, D, A.
(1995).
Breeding field crops
(
4th ed.)
.
Ames:
Iowa State University Press.
Gaya MLA
POEHLMAN, John, Milton., SPEPER, David, Allen.
"Breeding field crops".
4th ed.
Ames:
Iowa State University Press,
1995.
Buku.