Mills, M., Van de Bunt, G., & Bruijn, J. d. Comparative research: Persistent problems and promising solutions.
Lua i Stíl Chicago (17ú heag.)Mills, Melinda, Gerhard Van de Bunt, agus Jeanne de Bruijn. Comparative Research: Persistent Problems and Promising Solutions.
Lua MLA (9ú heag.)Mills, Melinda, et al. Comparative Research: Persistent Problems and Promising Solutions.
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