APA

Ahern K., . (1992). Cultural landscape bibliography: an annotated bibliography on resources in the national park system. Washington: Cultural Landscape Program.

Chicago

Ahern Katherine, . 1992. Cultural landscape bibliography: an annotated bibliography on resources in the national park system. Washington: Cultural Landscape Program.

Harvard

Ahern K., . (1992). Cultural landscape bibliography: an annotated bibliography on resources in the national park system. Washington: Cultural Landscape Program.

MLA

Ahern Katherine, . Cultural landscape bibliography: an annotated bibliography on resources in the national park system. Washington: Cultural Landscape Program. 1992.