Purushothaman, P. (2008). Vigotskiyum vidhyabhyasavum. Kerala sastra sahitya parishad.
シカゴスタイル引用形Purushothaman, P.V. Vigotskiyum Vidhyabhyasavum. Trissur: Kerala sastra sahitya parishad, 2008.
MLA引用形式Purushothaman, P.V. Vigotskiyum Vidhyabhyasavum. Kerala sastra sahitya parishad, 2008.
警告: この引用は必ずしも正確ではありません.