Gaya APA

Concepts of Freedom, 1776-1976, twelve essays American and German Scholars to Commemorate the Bicentennial of the United States, ed.by Hans-Joachim Zimmermann. . (1977). Heidelberg: Ruprecht-Karl-Universitaet.

Gaya MLA

Concepts of Freedom, 1776-1976, twelve essays American and German Scholars to Commemorate the Bicentennial of the United States, ed.by Hans-Joachim Zimmermann. . . Heidelberg: Ruprecht-Karl-Universitaet, 1977. Buku.