APA (7th ed.) Citation

Harris, R. H., & Emberley, M. (2004). Let's talk about where babies come from (Rev. and updated ed.). Walker.

Chicago Style (17th ed.) Citation

Harris, Robie H., and Michael Emberley. Let's Talk About Where Babies Come from. Rev. and updated ed. London: Walker, 2004.

MLA (9th ed.) Citation

Harris, Robie H., and Michael Emberley. Let's Talk About Where Babies Come from. Rev. and updated ed. Walker, 2004.