Παραπομπή APA

Clough, S. B., & Marbury, T. F. (1968). Economic basis of American Civilization. Thomas Y Growell Co.

Παραπομπή Chicago Style

Clough, Shepard B., και Theodore F. Marbury. Economic Basis of American Civilization. Newyork: Thomas Y Growell Co, 1968.

Παραπομπή MLA

Clough, Shepard B., και Theodore F. Marbury. Economic Basis of American Civilization. Thomas Y Growell Co, 1968.