APA

Halladay P., Gilmour D. A., .Conserving biodiversity outside protected areas. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources.

Chicago

Halladay Patricia, Gilmour D A, .Conserving biodiversity outside protected areas. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources.

Harvard

Halladay P., Gilmour D. A., .Conserving biodiversity outside protected areas. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources.

MLA

Halladay Patricia, Gilmour D A, .Gland, Switzerland: International Union for Conservation of Nature and Natural Resources. .