Gaya APA

Johnstone, W, R. (:). Introduction. Dlm: The opened curtain. A U.S. - Soviet philosophy summit.Ed.by Keith Lehrer & Ernest Sosa1991, Boulder. . : .

Gaya MLA

Johnstone, William, Robertson. "Introduction. Dlm: The opened curtain. A U.S. - Soviet philosophy summit.Ed.by Keith Lehrer & Ernest Sosa1991, Boulder.". : , :. Majalah.