Cita APA (7a ed.)

PERKINS, H. (1974). Air Pollution Henry Perkins. McGraw-Hill.

Cita Chicago Style (17a ed.)

PERKINS, Henry. Air Pollution Henry Perkins. McGraw-Hill, 1974.

Cita MLA (8a ed.)

PERKINS, Henry. Air Pollution Henry Perkins. McGraw-Hill, 1974.