APA-viite

Kerala. Directorate of Census Operations; Author. (1983). District census handbook 1981: Quilon district: Census of Kerala 1981.

Chicago-tyylinen lähdeviittaus

Kerala. Directorate of Census Operations; Author. District Census Handbook 1981: Quilon District: Census of Kerala 1981. Kerala, Director of Census Operations, 1983.

MLA-viite

Kerala. Directorate of Census Operations; Author. District Census Handbook 1981: Quilon District: Census of Kerala 1981. 1983.