Holtzman, S. H., Leich, C. M., & Wittgenstein, L. (1981). Wittgenstein: To follow a rule. Routledge Kegan Paul.
芝加哥风格引文Holtzman, Steven H., Christopher M. Leich, 与 Ludwig Wittgenstein. Wittgenstein: To Follow a Rule. London [u.a.]: Routledge Kegan Paul, 1981.
MLA引文Holtzman, Steven H., et al. Wittgenstein: To Follow a Rule. Routledge Kegan Paul, 1981.
警告：这些引文格式不一定是100％准确.