Gaya APA

Widja, I, G, N. (1992/1993). Album Arsitektur Tradisional Sumatera Utara: Album of Traditional Architecture of North Sumatera . Jakarta: Depdikbud.

Gaya MLA

Widja, I, G, N. "Album Arsitektur Tradisional Sumatera Utara: Album of Traditional Architecture of North Sumatera". Jakarta: Depdikbud, 1992/1993. Text.