APA (7th ed.) Citation

Dolder, W., & Dolder, U. (1979). Der Schweizerische Nationalpark. Kilda.

Chicago Style (17th ed.) Citation

Dolder, Willi, and Ursula Dolder. Der Schweizerische Nationalpark. Greven: Kilda, 1979.

MLA (9th ed.) Citation

Dolder, Willi, and Ursula Dolder. Der Schweizerische Nationalpark. Kilda, 1979.

Warning: These citations may not always be 100% accurate.