APA (7th ed.) Citation

Irmen, A. (2009). Population aging and the direction of technical change. Discussion paper series.

Chicago Style (17th ed.) Citation

Irmen, Andreas. "Population Aging and the Direction of Technical Change." Discussion Paper Series 2009.

MLA (9th ed.) Citation

Irmen, Andreas. "Population Aging and the Direction of Technical Change." Discussion Paper Series, 2009.

Warning: These citations may not always be 100% accurate.