Citazione Stile APA (7a Edizione)

Walsh, W. H. (1967). An introduction to philosophy of history (3a. ed.). Hutchinson University.

Citazione stile Chigago Style (17a edizione)

Walsh, W. H. An Introduction to Philosophy of History. 3a. ed. Londres: Hutchinson University, 1967.

Citatione MLA (9a ed.)

Walsh, W. H. An Introduction to Philosophy of History. 3a. ed. Hutchinson University, 1967.