Cita APA

Douglas & Power, C. (1977). The target book of picture puzzles. Wynedham Publications.

Chicago Edition Citation

Douglas i Christina Power. The Target Book of Picture Puzzles. London: Wynedham Publications, 1977.

Cita MLA

Douglas i Christina Power. The Target Book of Picture Puzzles. Wynedham Publications, 1977.

Atenció: Aquestes cites poden no estar 100% correctes.