APA (7th ed.) Citation

Ritchie, J., Ritchie, J. E., & Ritchie, J. (1984). The dangerous age: Surviving adolescence in New Zealand. Allen & Unwin [u.a.].

Chicago Style (17th ed.) Citation

Ritchie, Jane, James Ernest Ritchie, and James Ritchie. The Dangerous Age: Surviving Adolescence in New Zealand. North Sydney [u.a.]: Allen & Unwin [u.a.], 1984.

MLA (8th ed.) Citation

Ritchie, Jane, et al. The Dangerous Age: Surviving Adolescence in New Zealand. Allen & Unwin [u.a.], 1984.