Παραπομπή σε μορφή APA (7η εκδ.)

The Traditional land in Indonesia, exclusively in North Sumatra. between 1972 and 1974].

Παραπομπή σε μορφή Chicago (17η εκδ.)

The Traditional Land in Indonesia, Exclusively in North Sumatra. [n.p.: between 1972 and 1974].

Παραπομπή σε μορφή MLA (8th εκδ.)

The Traditional Land in Indonesia, Exclusively in North Sumatra. between 1972 and 1974].