APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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