APA

Ward P. R., Getty Conservation Institute, .The nature of conservation. Marina del Rey, Calif. (4503 Glencoe Ave., Marina del Rey 90292-6537): Getty Conservation Institute.

Chicago

Ward Philip R, Getty Conservation Institute, .The nature of conservation. Marina del Rey, Calif. (4503 Glencoe Ave., Marina del Rey 90292-6537): Getty Conservation Institute.

Harvard

Ward P. R., Getty Conservation Institute, .The nature of conservation. Marina del Rey, Calif. (4503 Glencoe Ave., Marina del Rey 90292-6537): Getty Conservation Institute.

MLA

Ward Philip R, Getty Conservation Institute, .Marina del Rey, Calif. (4503 Glencoe Ave., Marina del Rey 90292-6537): Getty Conservation Institute. .