APA (7th ed.) Citation

Constance, P., & Constance, H. (1991). The visitor's guide to Denmark. Moorland.

Chicago Style (17th ed.) Citation

Constance, Pat, and Hazel Constance. The Visitor's Guide to Denmark. England: Moorland, 1991.

MLA (9th ed.) Citation

Constance, Pat, and Hazel Constance. The Visitor's Guide to Denmark. Moorland, 1991.