Rotman, B. (2001). Signifying nothing: The semiotics of zero. Stanford Univ. Press.
Chicago-Zitierstil (17. Ausg.)Rotman, Brian. Signifying Nothing: The Semiotics of Zero. Stanford, Calif.: Stanford Univ. Press, 2001.
MLA-Zitierstil (8. Ausg.)Rotman, Brian. Signifying Nothing: The Semiotics of Zero. Stanford Univ. Press, 2001.
警告：这些引文格式不一定是100％准确.