APA-viite

K Balachandran Thampi. (1997). Natural resources of Kerala. WWF for nature.

Chicago-tyylinen lähdeviittaus

K Balachandran Thampi. Natural Resources of Kerala. Trivandrum: WWF for nature, 1997.

MLA-viite

K Balachandran Thampi. Natural Resources of Kerala. WWF for nature, 1997.