Παραπομπή APA

John Lankford. (1997). History of astronomy: An encyclopaedia. Garland.

Παραπομπή Chicago Style

John Lankford. History of Astronomy: An Encyclopaedia. New York: Garland, 1997.

Παραπομπή MLA

John Lankford. History of Astronomy: An Encyclopaedia. Garland, 1997.