FIREFLY BOOKS. (2012). FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS.
Cita Chicago (17th ed.)FIREFLY BOOKS. FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS, 2012.
Cita MLA (9th ed.)FIREFLY BOOKS. FIREFLY GENERAL KNOWLEDGE - BOOK 5. FIREFLY PUBLICATIONS, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.