Cita APA (7th ed.)

Garrido, T. P. (1973). Supplementary teaching materials on pollution for use in high school science classes. s.n.].

Cita Chicago (17th ed.)

Garrido, Teresa P. Supplementary Teaching Materials on Pollution for Use in High School Science Classes. [Quezon City: s.n.], 1973.

Cita MLA (9th ed.)

Garrido, Teresa P. Supplementary Teaching Materials on Pollution for Use in High School Science Classes. s.n.], 1973.