Rivera Sheila. (2007). Pull Ahead Biographies Books Alexander Graha. Lerner.
Cita Chicago (17th ed.)Rivera Sheila. Pull Ahead Biographies Books Alexander Graha. UK: Lerner, 2007.
Cita MLA (9th ed.)Rivera Sheila. Pull Ahead Biographies Books Alexander Graha. Lerner, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.