APA

Spellerberg I. F., . (1992). Evaluation and assessment for conservation. London: Chapman AND Hall.

Chicago

Spellerberg Ian F, . 1992. Evaluation and assessment for conservation. London: Chapman AND Hall.

Harvard

Spellerberg I. F., . (1992). Evaluation and assessment for conservation. London: Chapman AND Hall.

MLA

Spellerberg Ian F, . Evaluation and assessment for conservation. London: Chapman AND Hall. 1992.