Cita APA (7a ed.)

Contreras, R. H. (1989). 13C- and 1H-NMR spectra of 2-pyridone derivatives.

Cita Chicago Style (17a ed.)

Contreras, Rubén Horacio. 13C- and 1H-NMR Spectra of 2-pyridone Derivatives. 1989.

Cita MLA (8a ed.)

Contreras, Rubén Horacio. 13C- and 1H-NMR Spectra of 2-pyridone Derivatives. 1989.