APA (7th ed.) Citation

De Leon, H. S. (1977). Handbook on sales, agency and credit transactions: Hector S. De Leon. National Book Store.

Chicago Style (17th ed.) Citation

De Leon, Hector S. Handbook on Sales, Agency and Credit Transactions: Hector S. De Leon. Manila: National Book Store, 1977.

MLA (9th ed.) Citation

De Leon, Hector S. Handbook on Sales, Agency and Credit Transactions: Hector S. De Leon. National Book Store, 1977.

Warning: These citations may not always be 100% accurate.