BILLINGS, M. P. (1954). Structural goelogy -- Ed.2. Prentice-Hall.
芝加哥风格引文BILLINGS, Marland P. Structural Goelogy -- Ed.2. New York: Prentice-Hall, 1954.
MLA引文BILLINGS, Marland P. Structural Goelogy -- Ed.2. Prentice-Hall, 1954.
警告：这些引文格式不一定是100％准确.