Association of Natural Rubber Producing Countries, Seminar on Progress and Development of Rubber Smallholders, & Ani bin Arope. (1978). The Progress and development of rubber smallholders: Proceedings of the second seminar held in Hat Yai, Thailand, 18-23 October 1976. Secretariat, Association of Natural Rubber Producing Countries.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Association of Natural Rubber Producing Countries, Seminar on Progress and Development of Rubber Smallholders, و Ani bin Arope. The Progress and Development of Rubber Smallholders: Proceedings of the Second Seminar Held in Hat Yai, Thailand, 18-23 October 1976. Kuala Lumpur, Malaysia: Secretariat, Association of Natural Rubber Producing Countries, 1978.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Association of Natural Rubber Producing Countries, et al. The Progress and Development of Rubber Smallholders: Proceedings of the Second Seminar Held in Hat Yai, Thailand, 18-23 October 1976. Secretariat, Association of Natural Rubber Producing Countries, 1978.