APA(7版)引用形式

Singh, S. &. P. (2019). General studies for civil services preliminary examination 2019. McGraw Hill.

Chicagoスタイル(17版)引用形式

Singh, Surendra & Parmar. General Studies for Civil Services Preliminary Examination 2019. Chennai: McGraw Hill, 2019.

MLA(9版)引用形式

Singh, Surendra & Parmar. General Studies for Civil Services Preliminary Examination 2019. McGraw Hill, 2019.

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