Leong, Y. C. (1989). Emerging training and development needs in the telecommunications services industry in Singapore.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Leong, Yit Chun. Emerging Training and Development Needs in the Telecommunications Services Industry in Singapore. 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Leong, Yit Chun. Emerging Training and Development Needs in the Telecommunications Services Industry in Singapore. 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.