Cita APA

Symposium Humic substances in soil and crop science: selected readings Chicago, I., International Humic Substances Society., Divisions S-3, S., Divisions A-I and A-5 of the American Society of Agronomy., Divisions C-2 and C-3 of the Crop Science Society of America., MacCarthyC, P., . . . Bloom, P. (1990). Proceedings. Wisconsin, Estados Unidos de América: American Society of Agronomy, Inc. ; Soil Science Society of America, Inc..

Citación estilo Chicago

Symposium Humic substances in soil and crop science: selected readings Chicago, Illinois, International Humic Substances Society, S-2 Divisions S-3, Divisions A-I and A-5 of the American Society of Agronomy, Divisions C-2 and C-3 of the Crop Science Society of America, P. MacCarthyC, E. ClappR, R. L. Malcolm, y P.R. Bloom. Proceedings. Wisconsin, Estados Unidos de América: American Society of Agronomy, Inc. ; Soil Science Society of America, Inc., 1990.

Cita MLA

Symposium Humic substances in soil and crop science: selected readings Chicago, Illinois, et al. Proceedings. Wisconsin, Estados Unidos de América: American Society of Agronomy, Inc. ; Soil Science Society of America, Inc., 1990.