Cita APA (7th ed.)

Guerra, P. M. (1969). Problem solving approach in health education. s.n.].

Cita Chicago (17th ed.)

Guerra, Pacita M. Problem Solving Approach in Health Education. [Quezon City: s.n.], 1969.

Cita MLA (9th ed.)

Guerra, Pacita M. Problem Solving Approach in Health Education. s.n.], 1969.