Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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