APA-referens (7:e uppl.)

Holzer, H. (1969). Window to the past: Exploring history through esp (First edition.). Doubleday.

Chicago-referens (17:e uppl.)

Holzer, Hans. Window to the Past: Exploring History Through Esp. First edition. New York: Doubleday, 1969.

MLA-referens (9:e uppl.)

Holzer, Hans. Window to the Past: Exploring History Through Esp. First edition. Doubleday, 1969.