PLUMER, C. C., & McGEARY, D. (1993). Physical geology.-- ed.6. Wm. C. Brown.
芝加哥风格引文PLUMER, Charles C., 与 David McGEARY. Physical Geology.-- Ed.6. Dubuque: Wm. C. Brown, 1993.
MLA引文PLUMER, Charles C., 与 David McGEARY. Physical Geology.-- Ed.6. Wm. C. Brown, 1993.
警告：这些引文格式不一定是100％准确.