APA Alıntı

Freeland Peter. (1991). Focus on biology: Habitats and the environment. London: Hodder and Stoughton.

Chicago Stili Alıntı

Freeland Peter. Focus On Biology: Habitats and the Environment. London: Hodder and Stoughton, 1991.

MLA Alıntı

Freeland Peter. Focus On Biology: Habitats and the Environment. London: Hodder and Stoughton, 1991.

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