Ludlum Robert. (2007). Ambler Warning. Reader Digest (Australia ) Ltd.
Cita Chicago (17th ed.)Ludlum Robert. Ambler Warning. Australia: Reader Digest (Australia ) Ltd, 2007.
Cita MLA (9th ed.)Ludlum Robert. Ambler Warning. Reader Digest (Australia ) Ltd, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.