Rosenberg, A. (2000). The problem of enforcement: Is there an alternative to Leviathan. In L. Katz (Ed.), Evolutionary Origins of Morality (pp. 236–239). Thorverton, UK: Imprint Academic.

Rosenberg, A. “The problem of enforcement: Is there an alternative to Leviathan.” In Evolutionary Origins of Morality, edited by Leonard Katz, 236–39. Thorverton, UK: Imprint Academic, 2000.

Rosenberg A. The problem of enforcement: Is there an alternative to Leviathan. In: Katz L, editor. Evolutionary Origins of Morality. Thorverton, UK: Imprint Academic; 2000. p. 236–9.

Rosenberg, A. “The problem of enforcement: Is there an alternative to Leviathan.” Evolutionary Origins of Morality, edited by Leonard Katz, Thorverton, UK: Imprint Academic, 2000, pp. 236–39.

Rosenberg A. The problem of enforcement: Is there an alternative to Leviathan. In: Katz L, editor. Evolutionary Origins of Morality. Thorverton, UK: Imprint Academic; 2000. p. 236–239.