Cita APA (7th ed.)

Hapal, J. O., Aganon, M. E., Gatchalian, J. C., & Efron, J. E. Informal sector work: A matter of choice : (a case study in selected cities in Region IV).

Cita Chicago (17th ed.)

Hapal, Jocelyn O., Marie E. Aganon, Jose C. Gatchalian, i Jack E. Efron. Informal Sector Work: A Matter of Choice : (a Case Study in Selected Cities in Region IV). c1997.

Cita MLA (9th ed.)

Hapal, Jocelyn O., et al. Informal Sector Work: A Matter of Choice : (a Case Study in Selected Cities in Region IV).