Cita APA (7th ed.)

Syahruddin. (1980). Fertility determinants in Sumatra. SEAPRAP.

Cita Chicago (17th ed.)

Syahruddin. Fertility Determinants in Sumatra. Singapore: SEAPRAP, 1980.

Cita MLA (9th ed.)

Syahruddin. Fertility Determinants in Sumatra. SEAPRAP, 1980.