Variations on an American theme :
a study in contrasts /
by Northwestern Bell magazine.
APA Citation
Northwestern Bell Telephone Company. (1968). Variations on an American theme: a study in contrasts. [Omaha, Neb.]: [publisher not identified].
MLA Citation
Northwestern Bell Telephone Company. Variations On an American Theme: a Study In Contrasts. [Omaha, Neb.]: [publisher not identified], 1968.
Warning: These citations may not always be complete (especially for serials).