Kroeze, H. J. P. (1989). Amalgam and composite restorations: Prevalence and need for replacement. Katholieke Universiteit te Nijmegen.
Lua i Stíl Chicago (17ú heag.)Kroeze, Hendrikus Johannes Petrus. Amalgam and Composite Restorations: Prevalence and Need for Replacement. Nijmegen: Katholieke Universiteit te Nijmegen, 1989.
Lua MLA (8ú heag.)Kroeze, Hendrikus Johannes Petrus. Amalgam and Composite Restorations: Prevalence and Need for Replacement. Katholieke Universiteit te Nijmegen, 1989.
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