Cita APA (7th ed.)

BLYTON, E. (1999). PUZZLE FOR THE SECRET SEVEN: 10.

Cita Chicago (17th ed.)

BLYTON, ENID. PUZZLE FOR THE SECRET SEVEN: 10. 1999.

Cita MLA (9th ed.)

BLYTON, ENID. PUZZLE FOR THE SECRET SEVEN: 10. 1999.

Atenció: Aquestes cites poden no estar 100% correctes.