Cita APA (7a ed.)

Griffiths Margaret & Griffiths Ivor. (2002). Law for purchasing and supply (3rd ed.). Pearson education.

Cita Chicago Style (17a ed.)

Griffiths Margaret y Griffiths Ivor. Law for Purchasing and Supply. 3rd ed. Harlow: Pearson education, 2002.

Cita MLA (9a ed.)

Griffiths Margaret y Griffiths Ivor. Law for Purchasing and Supply. 3rd ed. Pearson education, 2002.