Gottesdiener. Requirements by Collaboration: Workshops for Defining Needs (1.). Pearson India.
Čikaški stil citiranja (17. izdanje)Gottesdiener. Requirements by Collaboration: Workshops for Defining Needs. 1. Pearson India.
MLA način citiranja (8. izdanje)Gottesdiener. Requirements by Collaboration: Workshops for Defining Needs. 1. Pearson India.
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