APA aipamena

STALLINGS , W. (1989). ISDN AN INTRODUCTION. MAC MILLAN PUB. CO.

Chicago Style aipamena

STALLINGS , W. ISDN AN INTRODUCTION. NEW YORK: MAC MILLAN PUB. CO, 1989.

MLA aipamena

STALLINGS , W. ISDN AN INTRODUCTION. MAC MILLAN PUB. CO, 1989.