Cita APA (7th ed.)

Harina, R. (1991). Programmed computer learning. National BookStore.

Cita Chicago (17th ed.)

Harina, R.M. Programmed Computer Learning. Metro Manila: National BookStore, 1991.

Cita MLA (9th ed.)

Harina, R.M. Programmed Computer Learning. National BookStore, 1991.