Twist, C. (1997). Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference.
Čikaški stil citiranja (17. izdanje)Twist, Clint. Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference, 1997.
MLA način citiranja (8. izdanje)Twist, Clint. Macmillan Revised ENCYCLOPEDIA of SCIENCE The Environment 7. Macmillan Reference, 1997.
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