Cita APA (7th ed.)
BECKER, S., & DEARDEN, C. UNKNOWN QUANTITY.
Cita Chicago (17th ed.)
BECKER, S., i C. DEARDEN. UNKNOWN QUANTITY.
Cita MLA (9th ed.)
BECKER, S., i C. DEARDEN. UNKNOWN QUANTITY.
Atenció: Aquestes cites poden no estar 100% correctes.