Cita APA (7th ed.)

Sills, B. (1976). Bubbles: A self-portrait / by Beverly Sills. Bobbs-Merrill.

Cita Chicago (17th ed.)

Sills, Beverly. Bubbles: A Self-portrait / by Beverly Sills. Indianapolis [u.a.]: Bobbs-Merrill, 1976.

Cita MLA (8th ed.)

Sills, Beverly. Bubbles: A Self-portrait / by Beverly Sills. Bobbs-Merrill, 1976.