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.

Association of Natural Rubber Producing Countries, Seminar on Progress and Development of Rubber Smallholders, and 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.

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.