APA (7th ed.) Citation

Mills, M., Van de Bunt, G., & Bruijn, J. d. Comparative research: Persistent problems and promising solutions.

Chicago Style (17th ed.) Citation

Mills, Melinda, Gerhard Van de Bunt, and Jeanne de Bruijn. Comparative Research: Persistent Problems and Promising Solutions.

MLA (9th ed.) Citation

Mills, Melinda, et al. Comparative Research: Persistent Problems and Promising Solutions.