Cita APA (7a ed.)

Bellet. (1972). Essentials of arrhyhias. s.n.

Cita Chicago Style (17a ed.)

Bellet. Essentials of Arrhyhias. Philadelphia: s.n, 1972.

Cita MLA (9a ed.)

Bellet. Essentials of Arrhyhias. s.n, 1972.