Singh B. B. (2019). Objective Agronomy: For Saus Entrance JRF/SRF/Ars/ ICAR/NET Civil Services & Other Competitive Examination. Daya Publishing House.
芝加哥风格引文Singh B. B. Objective Agronomy: For Saus Entrance JRF/SRF/Ars/ ICAR/NET Civil Services & Other Competitive Examination. New Delhi: Daya Publishing House, 2019.
MLA引文Singh B. B. Objective Agronomy: For Saus Entrance JRF/SRF/Ars/ ICAR/NET Civil Services & Other Competitive Examination. Daya Publishing House, 2019.
警告：这些引文格式不一定是100％准确.