APA (7th ed.) Citation

Alarcon, R. B. (1999). On phantoms of the opera. Unitas.

Chicago Style (17th ed.) Citation

Alarcon, Rogelio B. "On Phantoms of the Opera." Unitas 1999.

MLA (9th ed.) Citation

Alarcon, Rogelio B. "On Phantoms of the Opera." Unitas, 1999.

Warning: These citations may not always be 100% accurate.