De Leon, H. S. (1977). Handbook on insurance and sales (with insolvency law). National Book Store.
Citazione stile Chigago Style (17a edizione)De Leon, Hector S. Handbook on Insurance and Sales (with Insolvency Law). Manila: National Book Store, 1977.
Citatione MLA (9a ed.)De Leon, Hector S. Handbook on Insurance and Sales (with Insolvency Law). National Book Store, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.