Coggins, R. S., & Hefford, R. K. (1966). The practical geographer (2nd ed.(rev.).). Longman.
Citación estilo ChicagoCoggins, Robert S., and R. K. Hefford. The Practical Geographer. 2nd ed.(rev.). Camberwell, Vic.: Longman, 1966.
Cita MLACoggins, Robert S., and R. K. Hefford. The Practical Geographer. 2nd ed.(rev.). Longman, 1966.
Warning: These citations may not always be 100% accurate.