MDF Training & Consultancy, Spaans, H., Haagsma, R., & Snelder, H. (2010). MDF brochure 2011. MDF.
Lua i Stíl Chicago (17ú heag.)MDF Training & Consultancy, Hanneke Spaans, Reinanke Haagsma, agus Herman Snelder. MDF Brochure 2011. Netherlands: MDF, 2010.
Lua MLA (9ú heag.)MDF Training & Consultancy, et al. MDF Brochure 2011. MDF, 2010.
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