Gaya APA

Foundation, T, T, O, E, O, L, T, H., Manurung, F, (. (2000). The impacts of PT. Inti Indorayon Utama's operations on the environment of Lake Toba . Jakarta: Lake Toba Heritage Foundation.

Gaya MLA

Foundation, The, Team, Of, Experts, Of, Lake, Toba, Heritage., Manurung, Firman, (Editor). "The impacts of PT. Inti Indorayon Utama's operations on the environment of Lake Toba". Jakarta: Lake Toba Heritage Foundation, 2000. Text.