Cita APA (7a ed.)

De Kowalewski, D., Contreras, R. H., & De Los Santos, C. (1989). 13C- and 1H-NMR spectra of 2-pyridone derivatives. https://doi.org/10.1016/0022-2860(89)85120-8

Cita Chicago Style (17a ed.)

De Kowalewski, D.G, Rubén Horacio Contreras, y C. De Los Santos. 13C- and 1H-NMR Spectra of 2-pyridone Derivatives. 1989. https://dx.doi.org/10.1016/0022-2860(89)85120-8.

Cita MLA (8a ed.)

De Kowalewski, D.G, et al. 13C- and 1H-NMR Spectra of 2-pyridone Derivatives. 1989.