Swanson, J. L. (1987). LaidLaw world geography: A physical and cultural approach. Glencoe.
芝加哥风格引文Swanson, James L. LaidLaw World Geography: A Physical and Cultural Approach. New York: Glencoe, 1987.
MLA引文Swanson, James L. LaidLaw World Geography: A Physical and Cultural Approach. Glencoe, 1987.
警告：这些引文格式不一定是100％准确.