Singh B.B & Karthikeyan C. ; Aga F.A. (2022). Question Bank on Agricultural Extension: For ICAR`s Exams JRF SRF NET ARS IARI Ph.D SAU`s UPSC Civil Services ADO Banking and Other Competitive Examination (2nd.). Astral Cracker.
Chicago-referens (17:e uppl.)Singh B.B och Karthikeyan C. ; Aga F.A. Question Bank on Agricultural Extension: For ICAR`s Exams JRF SRF NET ARS IARI Ph.D SAU`s UPSC Civil Services ADO Banking and Other Competitive Examination. 2nd. New Delhi: Astral Cracker, 2022.
MLA-referens (9:e uppl.)Singh B.B och Karthikeyan C. ; Aga F.A. Question Bank on Agricultural Extension: For ICAR`s Exams JRF SRF NET ARS IARI Ph.D SAU`s UPSC Civil Services ADO Banking and Other Competitive Examination. 2nd. Astral Cracker, 2022.
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