Cita APA (7th ed.)

Tyler, J., Gee, R., & McClelland, P. (1992). Spelling puzzles. Usborne Pub.

Cita Chicago (17th ed.)

Tyler, Jenny, Robyn Gee, i Peter McClelland. Spelling Puzzles. London: Usborne Pub, 1992.

Cita MLA (9th ed.)

Tyler, Jenny, et al. Spelling Puzzles. Usborne Pub, 1992.