Gaya APA

Sihombing, D, T, H. (1997). Ilmu ternak babi / Dolok Tinada Haposan Sihombing (Cet.1). : Gadjah Mada University Press.

Gaya MLA

Sihombing, Dolok, Tinanda, Haposan. "Ilmu ternak babi / Dolok Tinada Haposan Sihombing". Cet.1 : Gadjah Mada University Press, 1997. Textbook.