Gaya APA

Strahler, A, N., Strahler, A, H. (1945). Geography and Man's Environment . United States of America: John Wiley & Sons, Inc..

Gaya MLA

Strahler, Arthur, N.., Strahler, Alan, H.. "Geography and Man's Environment". United States of America: John Wiley & Sons, Inc., 1945. Text.