Παραπομπή σε μορφή APA (7η εκδ.)
American Society of Agronomy, Crop Science Society of America. Division C-3, Crop Science Society of America. Division C-5, Soil Science Society of America (SSSA), Cruse R. M., Follett R. F., & Keeney Dennis R. (1991). Managing nitrogen for groundwater quality and farm profitability: Proceedings of a symposium sponsored by Division A-5 of the American Society of Agronomy; S-1, S-3, S-4, S-6. Soil Science Society of America (SSSA).
Παραπομπή σε μορφή Chicago (17η εκδ.)
American Society of Agronomy, Crop Science Society of America. Division C-3, Crop Science Society of America. Division C-5, Soil Science Society of America (SSSA), Cruse R. M., Follett R. F., και Keeney Dennis R. Managing Nitrogen for Groundwater Quality and Farm Profitability: Proceedings of a Symposium Sponsored by Division A-5 of the American Society of Agronomy; S-1, S-3, S-4, S-6. Soil Science Society of America (SSSA), 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)
American Society of Agronomy, et al. Managing Nitrogen for Groundwater Quality and Farm Profitability: Proceedings of a Symposium Sponsored by Division A-5 of the American Society of Agronomy; S-1, S-3, S-4, S-6. Soil Science Society of America (SSSA), 1991.
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