SHAH, R. मास्टरिंग स्टडी स्किल्स. Vidyapith (વિદ્યાપીઠ), [S. l.], v. 21, n. 3, p. 75–76, 1983. Disponível em: https://journal.gujaratvidyapith.org/index.php/vp/article/view/1146. Acesso em: 9 apr. 2026.