Burkett, N. H. (1976). Abby Kelley Foster and Stephen S. Foster. Worcester Bicentennial Commission.
芝加哥风格引文Burkett, Nancy H. Abby Kelley Foster and Stephen S. Foster. Worcester, Mass.: Worcester Bicentennial Commission, 1976.
MLA引文Burkett, Nancy H. Abby Kelley Foster and Stephen S. Foster. Worcester Bicentennial Commission, 1976.
警告：这些引文格式不一定是100％准确.