Cita APA (7a ed.)

Twist, C. (1997). Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference.

Cita Chicago Style (17a ed.)

Twist, Clint. Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference, 1997.

Cita MLA (8a ed.)

Twist, Clint. Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference, 1997.