APA (7th ed.) Citation

Spengler, O., & Werner, H. (1991). The decline of the West (Abridged ed.). Oxford Univ. Press.

Chicago Style (17th ed.) Citation

Spengler, Oswald, and Helmut Werner. The Decline of the West. Abridged ed. New York [u.a.]: Oxford Univ. Press, 1991.

MLA (9th ed.) Citation

Spengler, Oswald, and Helmut Werner. The Decline of the West. Abridged ed. Oxford Univ. Press, 1991.