APA-viite

Thorpe, E., & Thorpe, S. (2017). General studies for civil services preliminary examination paper I: Indian economy, economic and social development. Pearson.

Chicago-tyylinen lähdeviittaus

Thorpe, Edgar, ja Showick Thorpe. General Studies for Civil Services Preliminary Examination Paper I: Indian Economy, Economic and Social Development. Noida: Pearson, 2017.

MLA-viite

Thorpe, Edgar, ja Showick Thorpe. General Studies for Civil Services Preliminary Examination Paper I: Indian Economy, Economic and Social Development. Pearson, 2017.