APA (7th ed.) Citation

Gleitzman, M. (2010). Then (1st American ed.). Henry Holt.

Chicago Style (17th ed.) Citation

Gleitzman, Morris. Then. 1st American ed. New York: Henry Holt, 2010.

MLA (9th ed.) Citation

Gleitzman, Morris. Then. 1st American ed. Henry Holt, 2010.

Warning: These citations may not always be 100% accurate.