Não informado. (1978). International Building Services Abstracts. Building Services Research and Information Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. International Building Services Abstracts. Bracknell, Inglaterra: Building Services Research and Information Association, 1978.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. International Building Services Abstracts. Building Services Research and Information Association, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.