Παραπομπή σε μορφή APA (7η εκδ.)

Singh Surender & Parmar Virinder. (2024). General Studies for Civil Services Preliminary Examination: Also useful for State Public Service Commission Examinations Paper-I. Mc Graw Hill.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Singh Surender και Parmar Virinder. General Studies for Civil Services Preliminary Examination: Also Useful for State Public Service Commission Examinations Paper-I. Chennai: Mc Graw Hill, 2024.

Παραπομπή σε μορφή MLA (9th εκδ.)

Singh Surender και Parmar Virinder. General Studies for Civil Services Preliminary Examination: Also Useful for State Public Service Commission Examinations Paper-I. Mc Graw Hill, 2024.