International Society of Soil Science Sofia, B., Bie, S. W., & Sadovski, A. N. (1978). Developments in soil information systems: Proceedings of the Second Meeting of the ISSS Working Group... Wageningen Netherlands: Centre for Agricultural Publishing and Documentation.
Citación estilo ChicagoInternational Society of Soil Science Sofia, Bulgaria), Stein W. Bie, y Alexander N. Sadovski. Developments in Soil Information Systems: Proceedings of the Second Meeting of the ISSS Working Group... Wageningen Netherlands: Centre for Agricultural Publishing and Documentation, 1978.
Cita MLAInternational Society of Soil Science Sofia, Bulgaria), Stein W. Bie, y Alexander N. Sadovski. Developments in Soil Information Systems: Proceedings of the Second Meeting of the ISSS Working Group... Wageningen Netherlands: Centre for Agricultural Publishing and Documentation, 1978.