APA način citiranja (7. izdanje)
Hougaard, S. (2005). The Business Idea: The Early Stages of Entrepreneurship. Springer Berlin Heidelberg. https://doi.org/10.1007/b138370
Čikaški stil citiranja (17. izdanje)
Hougaard, Søren. The Business Idea: The Early Stages of Entrepreneurship. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138370.
MLA način citiranja (9. izdanje)
Hougaard, Søren. The Business Idea: The Early Stages of Entrepreneurship. Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138370.
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