William Benton. (1969). Compton's Encyclopedia and Fact-Index Volume 11, H/Hypno.
Chicago Style CitationWilliam Benton. Compton's Encyclopedia and Fact-Index Volume 11, H/Hypno. 1969.
Cita MLAWilliam Benton. Compton's Encyclopedia and Fact-Index Volume 11, H/Hypno. 1969.
Atenció: Aquestes cites poden no estar 100% correctes.