Omar Olimpio Victorino Vaz และ Sumalee Waiyarod. (2016) Seconcary school teachers' perception of motivation factors in nampula city, mozambique. Mahidol University:ม.ป.ท.Omar Olimpio Victorino Vaz และ Sumalee Waiyarod. 2016. Seconcary school teachers' perception of motivation factors in nampula city, mozambique. ม.ป.ท.:Mahidol University;Omar Olimpio Victorino Vaz และ Sumalee Waiyarod. Seconcary school teachers' perception of motivation factors in nampula city, mozambique. ม.ป.ท.:Mahidol University, 2016. Print.