Cita APA (7a ed.)

Brouwers, W. (2007). Stepping Tones. Ward Centrum Nederland.

Cita Chicago Style (17a ed.)

Brouwers, Wilko. Stepping Tones. ['s-Hertogenbosch]: Ward Centrum Nederland, 2007.

Cita MLA (8a ed.)

Brouwers, Wilko. Stepping Tones. Ward Centrum Nederland, 2007.