Cita APA (7th ed.)

(2003). Stepping Tones: Bd. 1.2.3 / Wilko Brouwers. Ward Centrum Nederland.

Cita Chicago (17th ed.)

Stepping Tones: Bd. 1.2.3 / Wilko Brouwers. ['s-Hertogenbosch]: Ward Centrum Nederland, 2003.

Cita MLA (8th ed.)

Stepping Tones: Bd. 1.2.3 / Wilko Brouwers. Ward Centrum Nederland, 2003.