HARRISON. E. R. (2014). FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO.
芝加哥风格引文HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO, 2014.
MLA引文HARRISON. E. R. FRANK MODERN CERTIFICATE BIOLOGY FOR MIDDLE SCHOOL CLASS- VII. FRANK BROS & CO, 2014.
警告：这些引文格式不一定是100％准确.