APA

Elton Martin C.J, . (1977). Evaluating New Telecommunications Services. (Proceedings of the NATO Telecommunications Symposium held at the University of Bergamo,Italy,September 5-8, 1977.). New York: Plenum Press.

Chicago

Elton Martin C.J, . 1977. Evaluating New Telecommunications Services. (Proceedings of the NATO Telecommunications Symposium held at the University of Bergamo,Italy,September 5-8, 1977.). New York: Plenum Press.

Harvard

Elton Martin C.J, . (1977). Evaluating New Telecommunications Services. (Proceedings of the NATO Telecommunications Symposium held at the University of Bergamo,Italy,September 5-8, 1977.). New York: Plenum Press.

MLA

Elton Martin C.J, . Evaluating New Telecommunications Services. (Proceedings of the NATO Telecommunications Symposium held at the University of Bergamo,Italy,September 5-8, 1977.). New York: Plenum Press. 1977.