(2006). Guidelines for soil description (fourth edition.).
芝加哥风格引文Guidelines for Soil Description. fourth edition. 2006.
MLA引文Guidelines for Soil Description. fourth edition. 2006.
警告：这些引文格式不一定是100％准确.
APA引文
(2006). Guidelines for soil description (fourth edition.).
芝加哥风格引文Guidelines for Soil Description. fourth edition. 2006.
MLA引文Guidelines for Soil Description. fourth edition. 2006.