APA (7th ed.) Citation

Groot, W., Hartog, J., & Oosterbeek, H. (1990). Training choice and earnings.

Chicago Style (17th ed.) Citation

Groot, Wim, Joop Hartog, and Hessel Oosterbeek. Training Choice and Earnings. Amsterdam, 1990.

MLA (9th ed.) Citation

Groot, Wim, et al. Training Choice and Earnings. 1990.