APA-referens (7:e uppl.)

Bark, D. L. (1974). Agreement on Berlin: A study of the 1970-72 quadripartite negotiations. American Enterprise Institute for Public Policy Research.

Chicago-referens (17:e uppl.)

Bark, Dennis L. Agreement on Berlin: A Study of the 1970-72 Quadripartite Negotiations. Washington: American Enterprise Institute for Public Policy Research, 1974.

MLA-referens (8:e uppl.)

Bark, Dennis L. Agreement on Berlin: A Study of the 1970-72 Quadripartite Negotiations. American Enterprise Institute for Public Policy Research, 1974.