APA

Carreck R., . (1986). The Children's Encyclopedia Of Natural History. London: Optimum.

Chicago

Carreck Rosalind, . 1986. The Children's Encyclopedia Of Natural History. London: Optimum.

Harvard

Carreck R., . (1986). The Children's Encyclopedia Of Natural History. London: Optimum.

MLA

Carreck Rosalind, . The Children's Encyclopedia Of Natural History. London: Optimum. 1986.