Roffman, H. (1998). Pictures of Fred: Howard Roffman. Gmünder.
Chicago-Zitierstil (17. Ausg.)Roffman, Howard. Pictures of Fred: Howard Roffman. Berlin: Gmünder, 1998.
MLA-Zitierstil (8. Ausg.)Roffman, Howard. Pictures of Fred: Howard Roffman. Gmünder, 1998.
警告：这些引文格式不一定是100％准确.