Gaya APA

TUMBUAN, F, B., TORUAN, R, L, [. (2011). Indonesia unincorporated business entities and the limited liability company . Jakarta: Gramedia.

Gaya MLA

TUMBUAN, Fred, B.G.., TORUAN, Rayendra, L., [ed.]. "Indonesia unincorporated business entities and the limited liability company". Jakarta: Gramedia, 2011. Buku.