Sanderson, M. (1977). Helpful and harmful organisms. Macdonald Educational.
芝加哥风格引文Sanderson, Mike. Helpful and Harmful Organisms. London: Macdonald Educational, 1977.
MLA引文Sanderson, Mike. Helpful and Harmful Organisms. Macdonald Educational, 1977.
警告：这些引文格式不一定是100％准确.