Begin your citation with the abbreviation "qtd. in." For example:
qtd. in
List the last name of the author in which the footnote appears. For example:
qtd. in Greene
End with the volume or edition number, a colon, and the page number on which the footnote appears. For example:
qtd. in Greene 3: 176
If there is no volume or edition number, simply list the page number after the author's last name. For example:
qtd. in Greene 176
Enclose your citation within parentheses. For example:
(qtd. in Greene 176)
Position your citation so that it comes directly after the quoted passage. For example:
Thomas Smith allegedly called necromancy "the actual art of the gods" (qtd. in Greene 176).
Include full bibliographical information for the work in which the footnote appears at the end of your paper. For example, if the footnote appeared in a book, your works-cited entry would appear as follows:
Greene, Sam. A Complete History of Necromancy. Boston: Magic Press, 2007.