Gillham, O. (2000). On roads less traveled. Filipinas.
Cita Chicago (17th ed.)Gillham, Omar. "On Roads Less Traveled." Filipinas 2000.
Cita MLA (9th ed.)Gillham, Omar. "On Roads Less Traveled." Filipinas, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.