Castles, L. (1972). The political life of a Sumatran residency: Tapanuli 1915-1940.
Chicago Style (17th ed.) CitationCastles, Lance. The Political Life of a Sumatran Residency: Tapanuli 1915-1940. [New Haven, Conn.], 1972.
MLA (8th ed.) CitationCastles, Lance. The Political Life of a Sumatran Residency: Tapanuli 1915-1940. 1972.
Warning: These citations may not always be 100% accurate.