Gaya APA

GINTING, A, B., SITORUS, O. (2013). Analysis of breakeven point IV adolina oil palm plantation in perbaungan distric of Serdang bedagai . Medan: Universitas HKBP Nommensen.

Gaya MLA

GINTING, Albina, Br., SITORUS, Olivia. "Analysis of breakeven point IV adolina oil palm plantation in perbaungan distric of Serdang bedagai ". Medan: Universitas HKBP Nommensen, 2013. Artikel.