Williams, C. (1980). Mount St. Helens, a changing landscape. Graphic Arts Center Pub. Co..
Chicago Style (17th ed.) CitationWilliams, Chuck. Mount St. Helens, a Changing Landscape. Portland, Or.: Graphic Arts Center Pub. Co., 1980.
MLA引文Williams, Chuck. Mount St. Helens, a Changing Landscape. Graphic Arts Center Pub. Co., 1980.
警告:這些引文格式不一定是100%准確.