Proceedings of the National IRPA (Intensification of Research in Priority Areas) Seminar (Agricultural Sector): Kuala Lumpur (Malaysia), 6-11 Jan 1992, p. 181-182
Proceedings of the Colloquium on Breeding and Selection for Clonal Oil Palms, Institut Penyelidikan Minyak Kelapa Sawit Malaysia, Bangi, Selangor (Malaysia): Bangi (Malaysia), 21 Mar 1987, p. 41-43