Penggayaan APA

Valuing nature?. (1997). London: Routledge.

Chicago Style

Valuing nature?. . London: Routledge, 1997. Text.

MLA Style

Valuing nature?. . London: Routledge, 1997. Text.

Turabian Style

Valuing nature?. London: Routledge, 1997. Print.