Murdock, K. B. (1967). " INTRODUCTION". In Nature’s Nation. Cambridge (MA): Harvard University Press. doi: https://doi.org/10.4159/harvard.9780674865549.intro
Murdock, Kenneth B. " INTRODUCTION". Nature’s Nation. Cambridge (MA): Harvard University Press, 1967. https://doi.org/10.4159/harvard.9780674865549.intro Web.
Murdock, Kenneth B. " INTRODUCTION". In Nature’s Nation, (Cambridge (MA): Harvard University Press, 1967) doi: https://doi.org/10.4159/harvard.9780674865549.intro
Murdock, K. B. (1967). INTRODUCTION. In Nature’s Nation, Cambridge (MA): Harvard University Press. Available From: Harvard University Press https://doi.org/10.4159/harvard.9780674865549.intro [Accessed 19 January 2021]