(2006). World reference base for soil resources 2006: A framework for international classification, correlation and communication. Rome: FAO.
استشهاد بنمط شيكاغوWorld Reference Base for Soil Resources 2006: A Framework for International Classification, Correlation and Communication. Rome: FAO, 2006.
MLA استشهادWorld Reference Base for Soil Resources 2006: A Framework for International Classification, Correlation and Communication. Rome: FAO, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.