M.- ud-D. Khan, M. Z. Iqbal, M. Ahmad, and A. Hussain, “PHENOTYPIC STABILITY IN GOSSYPIUM HIRSUTUM L. FOR YIELD, GINNING OUT TURN AND STAPLE LENGTH IN MULTAN COTTON ZONE”, Pakistan Journal of Scientific & Industrial Research, vol. 42, no. 6, pp. 355–359, Dec. 1999.