David Crampton (ed.): The Space Distribution of Quasars. Astronomical Society of the Pacific Conference Series, Vol. 21, herausgegeben durch ASP, 390 Ashton Avenue, San Francisco, CA 94112, California, 1991, 401 S., ISBN 0-937707-40-6Mücket · Astronomische Nachrichten1995PDF140 KB
Money & Schools, 4th editionby David C. Thompson; R. Craig Wood; Faith E. CramptonKnoeppel · Project MUSE2009PDF370 KB
Principles of modern chemistry / David W. Oxtoby, H. P. Gillis, Allan Campion.Oxtoby, David W. & 4 more2012EN