APA
Narayanan R, Chin Png Tat & Ng E K. (1967). Optimum number of trees in tapping experiments on Hevea brasiliensis. I. Half spiral alternate daily tapping with and without stimulation. : Journal of the Rubber Research Institute of Malaya.
Chicago
Narayanan R, Chin Png Tat and Ng E K. 1967. Optimum number of trees in tapping experiments on Hevea brasiliensis. I. Half spiral alternate daily tapping with and without stimulation. : Journal of the Rubber Research Institute of Malaya.
Harvard
Narayanan R, Chin Png Tat and Ng E K. (1967). Optimum number of trees in tapping experiments on Hevea brasiliensis. I. Half spiral alternate daily tapping with and without stimulation. : Journal of the Rubber Research Institute of Malaya.
MLA
Narayanan R, Chin Png Tat and Ng E K. Optimum number of trees in tapping experiments on Hevea brasiliensis. I. Half spiral alternate daily tapping with and without stimulation. : Journal of the Rubber Research Institute of Malaya. 1967.