Gaya APA

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How to Say No Without Feeling Guilty: Jangan Enggan Berkata Tidak ... (2001). Jakarta_: Erlangga Publishing.

Gaya MLA

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How to Say No Without Feeling Guilty: Jangan Enggan Berkata Tidak ... Cet. 1-Ed. 1 . Jakarta_: Erlangga Publishing, 2001. Buku Teks.