Dyfyniad APA

Spellerberg, I. F. (1992). Evaluation and assessment for conservation: Ecological guidelines for determining priorities for nature conservation. London: Chapman & Hall.

Dyfyniad Arddull Chicago

Spellerberg, Ian F. Evaluation and Assessment for Conservation: Ecological Guidelines for Determining Priorities for Nature Conservation. London: Chapman & Hall, 1992.

Dyfyniad MLA

Spellerberg, Ian F. Evaluation and Assessment for Conservation: Ecological Guidelines for Determining Priorities for Nature Conservation. London: Chapman & Hall, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.