Gaya APA
Morgan, Stephen L. (2007).
Counterfactuals and causal inference : methods and principles for social research 2nd ed .
Cambridge:
Cambridge University Press.
Gaya Chicago
Morgan, Stephen L.
Counterfactuals and causal inference : methods and principles for social research 2nd ed.
Cambridge:
Cambridge University Press,
2007.
Text.
Gaya MLA
Morgan, Stephen L.
Counterfactuals and causal inference : methods and principles for social research 2nd ed.
Cambridge:
Cambridge University Press,
2007.
Text.
Gaya Turabian
Morgan, Stephen L.
Counterfactuals and causal inference : methods and principles for social research 2nd ed.
Cambridge:
Cambridge University Press,
2007.
Print.