Lua APA (7ú heag.)
Thorpe, E., & Thorpe, S. (2014). The pearson general studies (paper-i) 2014: For the civil services preliminary examination. Pearson.
Lua i Stíl Chicago (17ú heag.)
Thorpe, Edgar, agus Showick Thorpe. The Pearson General Studies (paper-i) 2014: For the Civil Services Preliminary Examination. New Delhi: Pearson, 2014.
Lua MLA (9ú heag.)
Thorpe, Edgar, agus Showick Thorpe. The Pearson General Studies (paper-i) 2014: For the Civil Services Preliminary Examination. Pearson, 2014.
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