Arif, Z., & Napitupulu, W. (1997). Pedoman baru menysun bahan belajar. Grasindo.
Chicago Style (17th ed.) CitationArif, Zainudin, and W.B Napitupulu. Pedoman Baru Menysun Bahan Belajar. Grasindo, 1997.
MLA (8th ed.) CitationArif, Zainudin, and W.B Napitupulu. Pedoman Baru Menysun Bahan Belajar. Grasindo, 1997.
Warning: These citations may not always be 100% accurate.