APA Style

Usman Nasution,Ir.. (1994). Buletin Pertanian Volume 13 Nomor 1 April 1994 (2). Medan: Fakultas Pertanian UISU.

Chicago Style

Usman Nasution,Ir.. Buletin Pertanian Volume 13 Nomor 1 April 1994. 2 Medan: Fakultas Pertanian UISU, 1994. Hard Copy.

MLA Style

Usman Nasution,Ir.. Buletin Pertanian Volume 13 Nomor 1 April 1994. 2 Medan: Fakultas Pertanian UISU, 1994. Hard Copy.

Turabian Style

Usman Nasution,Ir.. Buletin Pertanian Volume 13 Nomor 1 April 1994. 2 Medan: Fakultas Pertanian UISU, 1994. Hard Copy.