APA (7th ed.) Citation

Humprey, D. d. I. d. (1975). Singer: Why do you sing. [s.n.].

Chicago Style (17th ed.) Citation

Humprey, Dolores de Iruretagoyena de. Singer: Why Do You Sing. Manila: [s.n.], 1975.

MLA (9th ed.) Citation

Humprey, Dolores de Iruretagoyena de. Singer: Why Do You Sing. [s.n.], 1975.