APA (7th ed.) Citation

Cuperus, R., & Wiersma, J. M. (1996). SPD in problemen.

Chicago Style (17th ed.) Citation

Cuperus, René, and Jan Marinus Wiersma. SPD in Problemen. 1996.

MLA (9th ed.) Citation

Cuperus, René, and Jan Marinus Wiersma. SPD in Problemen. 1996.

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