Gaya APA

Perret, D., Surachman, H. (2014). History of Padang Lawas North Sumatra I : the site si Pamutung (9th century - 13th century AD) . Paris: Cahiers d' Archipel.

Gaya MLA

Perret, Daniel., Surachman, Heddy. "History of Padang Lawas North Sumatra I : the site si Pamutung (9th century - 13th century AD)". Paris: Cahiers d' Archipel, 2014. Text.