APA (7th ed.) Citation

Black, S. E., Devereux, P. J., & Salvanes, K. G. (2007). Older and wiser?: Birth order and IQ of young men. CEPR.

Chicago Style (17th ed.) Citation

Black, Sandra E., Paul J. Devereux, and Kjell G. Salvanes. Older and Wiser?: Birth Order and IQ of Young Men. London: CEPR, 2007.

MLA (9th ed.) Citation

Black, Sandra E., et al. Older and Wiser?: Birth Order and IQ of Young Men. CEPR, 2007.