Cita APA (7th ed.)

Cobb, D. F., & Anderson, L. (1983). 1-2-3 for business. National Book Store.

Cita Chicago (17th ed.)

Cobb, Douglas Ford, i Leith Anderson. 1-2-3 for Business. Manila: National Book Store, 1983.

Cita MLA (9th ed.)

Cobb, Douglas Ford, i Leith Anderson. 1-2-3 for Business. National Book Store, 1983.