Gaya APA

Bunnik, N, J, J. (1982). Study on User Requirements for A Tropical Earth Resources Satellite System (Juli 1982). Bandung: Direktorat Vulkanologi.

Gaya MLA

Bunnik, N., J., J.. "Study on User Requirements for A Tropical Earth Resources Satellite System". Juli 1982 Bandung: Direktorat Vulkanologi, 1982. Text.