Cita APA (7a ed.)

CHAPMAN K. (1991). THE INTERNATIONAL PETRO CHEMICAL INDUSTRY. BLACK WELL.

Cita Chicago Style (17a ed.)

CHAPMAN K. THE INTERNATIONAL PETRO CHEMICAL INDUSTRY. OXFORD: BLACK WELL, 1991.

Cita MLA (9a ed.)

CHAPMAN K. THE INTERNATIONAL PETRO CHEMICAL INDUSTRY. BLACK WELL, 1991.