Khan, Munir-ud-Din, M Zafar Iqbal, Mushtaq Ahmad, and Altaf Hussain. 1999. “PHENOTYPIC STABILITY IN GOSSYPIUM HIRSUTUM L. FOR YIELD, GINNING OUT TURN AND STAPLE LENGTH IN MULTAN COTTON ZONE”. Biological Sciences - PJSIR 42 (6):355-59. http://v2.pjsir.org/index.php/biological-sciences/article/view/2202.