APA

Shearer M. H., . (1945). Laboratory exercises in physical geography. New York: McGraw-Hill.

Chicago

Shearer M H, . 1945. Laboratory exercises in physical geography. New York: McGraw-Hill.

Harvard

Shearer M. H., . (1945). Laboratory exercises in physical geography. New York: McGraw-Hill.

MLA

Shearer M H, . Laboratory exercises in physical geography. New York: McGraw-Hill. 1945.