APA
United States of America, . (1986). Telephone engineer and management. Chicago: Telephone engineer publishing Corp.
Chicago
United States of America, . 1986. Telephone engineer and management. Chicago: Telephone engineer publishing Corp.
Harvard
United States of America, . (1986). Telephone engineer and management. Chicago: Telephone engineer publishing Corp.
MLA
United States of America, . Telephone engineer and management. Chicago: Telephone engineer publishing Corp. 1986.