APA
(1971). Introdution to Scientific Geographic Research. WM.C Brown Company Publishers: United States of America.
Chicago
1971. Introdution to Scientific Geographic Research. WM.C Brown Company Publishers: United States of America.
Harvard
(1971). Introdution to Scientific Geographic Research. WM.C Brown Company Publishers: United States of America.
MLA
Introdution to Scientific Geographic Research. WM.C Brown Company Publishers: United States of America. 1971.