Cita APA

Shechan, A. (1972). Purnell's discovering nature. Purnell.

Citación estilo Chicago

Shechan, A. Purnell's Discovering Nature. London: Purnell, 1972.

Cita MLA

Shechan, A. Purnell's Discovering Nature. Purnell, 1972.

Warning: These citations may not always be 100% accurate.