APA način citiranja (7. izdanje)
Durham, B. (1971). Here's how to write a letter: To write better letters. Multiservice.
Čikaški stil citiranja (17. izdanje)
Durham, Boniface. Here's How to Write a Letter: To Write Better Letters. Lusaka: Multiservice, 1971.
MLA način citiranja (9. izdanje)
Durham, Boniface. Here's How to Write a Letter: To Write Better Letters. Multiservice, 1971.
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