Where a work has an original author or editor and has been translated, you need to include the details of the Author/Editor and the Translator in the footnote and the bibliography.  

Footnotes and Bibliography:

Footnote:

Note Number. First Name Surname of Author, Title, trans. by First name Surname (Publisher, Year), p. xx.

Example:

3. Gabriel García Márquez, One hundred years of solitude, trans. by Gregory Rabassa (Penguin, 2007), p. 143.

Subsequent citation in footnote:

Note Number. Author Surname, p. xx.

Example:

8. García Márquez, p. 122.

Entry in a bibliography:

Surname, First name, Title, trans. by First name Surname of translator (Publisher, Year)

Example:

García Márquez, Gabriel, One hundred years of solitude, trans. by Gregory Rabassa (Penguin, 2007)