APA (7th ed.) Citation

Heal, G., & Kunreuther, H. (2006). Supermodality and tipping. National Bureau of Economic Research.

Chicago Style (17th ed.) Citation

Heal, Geoffrey, and Howard Kunreuther. Supermodality and Tipping. Cambridge, Mass: National Bureau of Economic Research, 2006.

MLA (9th ed.) Citation

Heal, Geoffrey, and Howard Kunreuther. Supermodality and Tipping. National Bureau of Economic Research, 2006.

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