APA (7th ed.) Citation

Koornstra, M. J. (1988). Ridendo dicere verum: Telling the truth with a smile. Institute for Road Safety Research SWOV, The Netherlands.

Chicago Style (17th ed.) Citation

Koornstra, M. J. Ridendo Dicere Verum: Telling the Truth with a Smile. Leidschendam: Institute for Road Safety Research SWOV, The Netherlands, 1988.

MLA (9th ed.) Citation

Koornstra, M. J. Ridendo Dicere Verum: Telling the Truth with a Smile. Institute for Road Safety Research SWOV, The Netherlands, 1988.