Edgar Thorpe & Showick Thorpe. (2011). The pearson CSAT manual 2011: Civil service aptitude test for the UPSC civil services preliminary examination. Pearson Education.
শিকাগো স্টাইলে সাইটেশনEdgar Thorpe এবং Showick Thorpe. The Pearson CSAT Manual 2011: Civil Service Aptitude Test for the UPSC Civil Services Preliminary Examination. Delhi: Pearson Education, 2011.
এমএলএ সাইটেশনEdgar Thorpe এবং Showick Thorpe. The Pearson CSAT Manual 2011: Civil Service Aptitude Test for the UPSC Civil Services Preliminary Examination. Pearson Education, 2011.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.