Cita APA (7th ed.)

(1972). The practitioner's shell model. [By] George F. Bertsch.

Cita Chicago (17th ed.)

The Practitioner's Shell Model. [By] George F. Bertsch. 1972.

Cita MLA (9th ed.)

The Practitioner's Shell Model. [By] George F. Bertsch. 1972.

Atenció: Aquestes cites poden no estar 100% correctes.