McDowell, E. A. (1939). Book Review: Black Folk, Then and Now. Review and expositor, 36(4), 487-489. doi:10.1177/003463733903600429
芝加哥风格引文McDowell, Edward Allison. "Book Review: Black Folk, Then and Now." Review and Expositor 36, no. 4 (1939): 487-489, https://doi.org/10.1177/003463733903600429.
MLA引文McDowell, Edward Allison. "Book Review: Black Folk, Then and Now." Review and Expositor, vol. 36, no. 4, 1939, pp. 487-489, https://doi.org/10.1177/003463733903600429.
警告：这些引文格式不一定是100％准确.
