Cyclopedia of telephony and telegraphy :
a general reference work ... /
prepared by a corps of telephone and telegraph experts, and electrical engineers of the highest professional standing ; illustrated with over two thousand engravings ...
APA Citation
American School of Correspondence, C. (1912). Cyclopedia of telephony and telegraphy: a general reference work .... Chicago: The School.
MLA Citation
American School of Correspondence, Chicago. Cyclopedia of Telephony And Telegraphy: a General Reference Work .... Chicago: The School, 1912.
Warning: These citations may not always be complete (especially for serials).