Speak-Up & Shanley, J. P. (2008). La duda. RBA revistas.
Chicago Style (17th ed.) CitationSpeak-Up and John Patrick Shanley. La Duda. Barcelona: RBA revistas, 2008.
MLA (9th ed.) CitationSpeak-Up and John Patrick Shanley. La Duda. RBA revistas, 2008.
Warning: These citations may not always be 100% accurate.