Cita APA (7a ed.)

Jeffs, T., & Smith, M. (1987). Youth work. MacMillan.

Cita Chicago Style (17a ed.)

Jeffs, Tony, y Mark Smith. Youth Work. Basingstoke [etc.]: MacMillan, 1987.

Cita MLA (9a ed.)

Jeffs, Tony, y Mark Smith. Youth Work. MacMillan, 1987.