Ravi Parkash. Encyclopaedia of educational research: Methods of educational research Vol 2(Reference).
استشهاد بنمط شيكاغوRavi Parkash. Encyclopaedia of Educational Research: Methods of Educational Research Vol 2(Reference).
MLA استشهادRavi Parkash. Encyclopaedia of Educational Research: Methods of Educational Research Vol 2(Reference).
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.