Cita APA (7a ed.)

Kumar, A., & Kumar, A. (2010). Air Quality. IntechOpen.

Cita Chicago Style (17a ed.)

Kumar, Ashok, y Ashok Kumar. Air Quality. Rijeka, Croatia: IntechOpen, 2010.

Cita MLA (9a ed.)

Kumar, Ashok, y Ashok Kumar. Air Quality. IntechOpen, 2010.