R. P. S., R. 1973. Lim Chong-Yah, Lee Sheng-Yi y Chia Siow-Yue. Elements of economic theory. Kuala Lumpur, Singapur : Oxford University Press, 1971. 250 p. Estudios Demográficos y Urbanos. 7, 01 (ene. 1973), 117. DOI:https://doi.org/10.24201/edu.v7i01.233.