APA Style
Usman Nasution, Ir.. ().
Buletin Pertanian Volume 7 Nomor 1 April-mei 1988 (2).
Medan:
Fakultas Pertanian UISU.
Chicago Style
Usman Nasution, Ir..
Buletin Pertanian Volume 7 Nomor 1 April-mei 1988.
2
Medan:
Fakultas Pertanian UISU,
.
Hard Copy.
MLA Style
Usman Nasution, Ir..
Buletin Pertanian Volume 7 Nomor 1 April-mei 1988.
2
Medan:
Fakultas Pertanian UISU,
.
Hard Copy.
Turabian Style
Usman Nasution, Ir..
Buletin Pertanian Volume 7 Nomor 1 April-mei 1988.
2
Medan:
Fakultas Pertanian UISU,
.
Hard Copy.