Sonia Kook

• Guia Na Éksito!
• Lead Towards Success! : REFERENCE BOOK pertaining to electronic application
• Leidinggeven : succesvolle Benadering!
• Meng Zoet Met Zuur
• Meskla Dushi Ku Marga
• Mezcle lo Dulce con lo Amargo : L?¡deres
• Mix Sweet with Sour