APA

Black U. D., . (1993). X.25 and related protocols. Los Alamitos, Calif. [u.a.]: IEEE Computer Soc. Press.

Chicago

Black Uyless D, . 1993. X.25 and related protocols. Los Alamitos, Calif. [u.a.]: IEEE Computer Soc. Press.

Harvard

Black U. D., . (1993). X.25 and related protocols. Los Alamitos, Calif. [u.a.]: IEEE Computer Soc. Press.

MLA

Black Uyless D, . X.25 and related protocols. Los Alamitos, Calif. [u.a.]: IEEE Computer Soc. Press. 1993.