Cita APA (7th ed.)

Helbo, A. (1987). Theory of performing arts. John Benjamins.

Cita Chicago (17th ed.)

Helbo, André. Theory of Performing Arts. Amsterdam ; Philadelpha: John Benjamins, 1987.

Cita MLA (8th ed.)

Helbo, André. Theory of Performing Arts. John Benjamins, 1987.