Broken Hill Proprietary Company. (1950). Staff training handbook for technical cadets, technical trainees, engineering apprentices, trade apprentices, commercial trainees and other classifications. The Company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Broken Hill Proprietary Company. Staff Training Handbook for Technical Cadets, Technical Trainees, Engineering Apprentices, Trade Apprentices, Commercial Trainees and Other Classifications. [Melbourne?]: The Company, 1950.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Broken Hill Proprietary Company. Staff Training Handbook for Technical Cadets, Technical Trainees, Engineering Apprentices, Trade Apprentices, Commercial Trainees and Other Classifications. The Company, 1950.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.