Cita APA (7th ed.)

Spitaels, G. (1990). Emile Vandervelde, Josph Wauters, Achille Delattre. La Louvière: IEV.

Cita Chicago (17th ed.)

Spitaels, Guy. Emile Vandervelde, Josph Wauters, Achille Delattre. La Louvière: IEV, 1990.

Cita MLA (8th ed.)

Spitaels, Guy. Emile Vandervelde, Josph Wauters, Achille Delattre. La Louvière: IEV, 1990.

Atenció: Aquestes cites poden no estar 100% correctes.