Twentieth-century American science-fiction writers /
edited by David Cowart and Thomas L. Wymer ; foreword by Thomas M. Disch.
APA Citation
Wymer, T. L., Cowart, D. (1981). Twentieth-century American science-fiction writers. Detroit, Mich.: Gale Research Co..
MLA Citation
Wymer, Thomas L, and David Cowart. Twentieth-century American Science-fiction Writers. Detroit, Mich.: Gale Research Co., 1981.
Warning: These citations may not always be complete (especially for serials).