APA aipamena

Strahler, A. N. (1970). Introduction to physical geography. New York: John Wiley & Sons, Inc.

Chicago Style aipamena

Strahler, Arthur Newell. Introduction to Physical Geography. New York: John Wiley & Sons, Inc, 1970.

MLA aipamena

Strahler, Arthur Newell. Introduction to Physical Geography. New York: John Wiley & Sons, Inc, 1970.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.