Cita APA (7th ed.)

Schacht P, Da̕z-Garca̕ L, Aguilar J, Ramr̕ez S, Přez-Romo P, Espinosa M, & Scientific Research Publishing. Upgrading of heavy crude oil with W-Zr catalyst.

Cita Chicago (17th ed.)

Schacht P, Da̕z-Garca̕ L, Aguilar J, Ramr̕ez S, Přez-Romo P, Espinosa M, i Scientific Research Publishing. Upgrading of Heavy Crude Oil with W-Zr Catalyst.

Cita MLA (9th ed.)

Schacht P, et al. Upgrading of Heavy Crude Oil with W-Zr Catalyst.