Q. Where should the translator's name of the book I'm referring to go on my reference?

Our Referencing Guides contain lots of helpful information:

a) If you are using the ARU Harvard referencing style:
Guidelines about the format of referencing a translated book can be found in the “Books – translations/imprints/reprints” subheading.

b) If you are using the Cite Them Right Harvard referencing style:
Guidelines about referencing a translated book can be found in the “Translated Books” subheading under the Books heading.