Não informado. (1972). Building equipment and materials. IPC Building and Contract Journals.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Building Equipment and Materials. London: IPC Building and Contract Journals, 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Building Equipment and Materials. IPC Building and Contract Journals, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.