Cita APA (7a ed.)

Wellburn, A. (1991). Air pollution and acid rain: The biological impact. Longman scientific.

Cita Chicago Style (17a ed.)

Wellburn, Alan. Air Pollution and Acid Rain: The Biological Impact. Nueva York: Longman scientific, 1991.

Cita MLA (9a ed.)

Wellburn, Alan. Air Pollution and Acid Rain: The Biological Impact. Longman scientific, 1991.