Citazione Stile APA (7a Edizione)

-. (1990). The land resources of indonesia: A anational overview. Foreign Office.

Citazione stile Chigago Style (17a edizione)

-. The Land Resources of Indonesia: A Anational Overview. London: Foreign Office, 1990.

Citatione MLA (9a ed.)

-. The Land Resources of Indonesia: A Anational Overview. Foreign Office, 1990.