Cita APA (7a ed.)

Sala, H. J. (1998). Heroes: People who made a difference in our world. OMF Literature.

Cita Chicago Style (17a ed.)

Sala, Harold J. Heroes: People Who Made a Difference in Our World. Manila: OMF Literature, 1998.

Cita MLA (9a ed.)

Sala, Harold J. Heroes: People Who Made a Difference in Our World. OMF Literature, 1998.