Holzer, H. (1969). Window to the past: Exploring history through esp (First edition.). Doubleday.
Chicago-viite (17. p.)Holzer, Hans. Window to the Past: Exploring History Through Esp. First edition. New York: Doubleday, 1969.
MLA-viite (9. p.)Holzer, Hans. Window to the Past: Exploring History Through Esp. First edition. Doubleday, 1969.
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