Cita APA (7th ed.)

Gray, R. (1987). Piano. Angus & Robertson Publishers.

Cita Chicago (17th ed.)

Gray, Robert. Piano. Singapore: Angus & Robertson Publishers, 1987.

Cita MLA (9th ed.)

Gray, Robert. Piano. Angus & Robertson Publishers, 1987.

Atenció: Aquestes cites poden no estar 100% correctes.