Cita APA (7a ed.)

Ferraro, R., & Sforza, D. Quantization of generally covariant systems with extrinsic time.

Cita Chicago Style (17a ed.)

Ferraro, R., y D.M Sforza. Quantization of Generally Covariant Systems with Extrinsic Time.

Cita MLA (8a ed.)

Ferraro, R., y D.M Sforza. Quantization of Generally Covariant Systems with Extrinsic Time.