APA (7th ed.) Citation

Santos, R. E. (1956). Think of me for bass or mezzo-soprano. s.n.].

Chicago Style (17th ed.) Citation

Santos, Rosendo E. Think of Me for Bass or Mezzo-soprano. [London: s.n.], 1956.

MLA (9th ed.) Citation

Santos, Rosendo E. Think of Me for Bass or Mezzo-soprano. s.n.], 1956.