Παραπομπή APA

Usinger, R. L. (1967). life of rivers and streams. McGraw-Hill.

Παραπομπή Chicago Style

Usinger, Robert L. Life of Rivers and Streams. New York: McGraw-Hill, 1967.

Παραπομπή MLA

Usinger, Robert L. Life of Rivers and Streams. McGraw-Hill, 1967.