APA

International Telephone and Telegraph Corporation, . (1968). Reference data for radio engineers. New York: International Telephone and Telegraph Corporation.

Chicago

International Telephone and Telegraph Corporation, . 1968. Reference data for radio engineers. New York: International Telephone and Telegraph Corporation.

Harvard

International Telephone and Telegraph Corporation, . (1968). Reference data for radio engineers. New York: International Telephone and Telegraph Corporation.

MLA

International Telephone and Telegraph Corporation, . Reference data for radio engineers. New York: International Telephone and Telegraph Corporation. 1968.