Engels, F., Untermann, E., & Morgan, L. H. (1902). The origin of the family, private property and the state. C.H. Kerr.
芝加哥风格引文Engels, Friedrich, Ernest Untermann, 与 Lewis H. Morgan. The Origin of the Family, Private Property and the State. Chicago: C.H. Kerr, 1902.
MLA引文Engels, Friedrich, et al. The Origin of the Family, Private Property and the State. C.H. Kerr, 1902.
警告：这些引文格式不一定是100％准确.