Cita APA (7th ed.)

TVE International. (1990). Not a dirty word: Environment (TVE international.). ACE communications.

Cita Chicago (17th ed.)

TVE International. Not a Dirty Word: Environment. TVE international. Nairobi Kenya: ACE communications, 1990.

Cita MLA (9th ed.)

TVE International. Not a Dirty Word: Environment. TVE international. ACE communications, 1990.