Cita APA (7a ed.)

Alonzo, R. P. (1989). The urban informal sector in Metro Manila: A macro perspective. s.n.].

Cita Chicago Style (17a ed.)

Alonzo, Ruperto P. The Urban Informal Sector in Metro Manila: A Macro Perspective. [s.l: s.n.], 1989.

Cita MLA (9a ed.)

Alonzo, Ruperto P. The Urban Informal Sector in Metro Manila: A Macro Perspective. s.n.], 1989.