Stahmer, A. (1987). Communications technology and distance learning in Canada: A survey of Canadian activities. Department of Communications, Govt. of Canada.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Stahmer, Anna. Communications Technology and Distance Learning in Canada: A Survey of Canadian Activities. Ottawa, Ontario: Department of Communications, Govt. of Canada, 1987.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Stahmer, Anna. Communications Technology and Distance Learning in Canada: A Survey of Canadian Activities. Department of Communications, Govt. of Canada, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.