APA (7th ed.) Citation

Petrin, A., & Train, K. (2003). Omitted product attributes in discrete choice models. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Petrin, Amil, and Kenneth Train. Omitted Product Attributes in Discrete Choice Models. Cambridge, Mass: National Bureau of Economic Research, 2003.

MLA (9th ed.) Citation

Petrin, Amil, and Kenneth Train. Omitted Product Attributes in Discrete Choice Models. National Bureau of Economic Research, 2003.