Cita APA (7a ed.)

Bunnett, R. B., Tan, T. W., & Goh, Y. H. (1968). New secondary geographies for Singapore (1. publ.). Longmans Malaysia.

Cita Chicago Style (17a ed.)

Bunnett, R. B., Teng Wai Tan, y Yong Hung Goh. New Secondary Geographies for Singapore. 1. publ. Singapore: Longmans Malaysia, 1968.

Cita MLA (9a ed.)

Bunnett, R. B., et al. New Secondary Geographies for Singapore. 1. publ. Longmans Malaysia, 1968.