Sengers, W. J. 1. -. 2. .
Cita Chicago (17th ed.)Sengers, Wijnandus Johannes 1927 - 2002. .
Cita MLA (8th ed.)Sengers, Wijnandus Johannes 1927 - 2002. .
Atenció: Aquestes cites poden no estar 100% correctes.
Sengers, W. J. 1. -. 2. .
Cita Chicago (17th ed.)Sengers, Wijnandus Johannes 1927 - 2002. .
Cita MLA (8th ed.)Sengers, Wijnandus Johannes 1927 - 2002. .