APA (7th ed.) Citation

Von Arnim, E. (1926). In the mountains. Macmillan, 1920.

Chicago Style (17th ed.) Citation

Von Arnim, Elizabeth. In the Mountains. London: Macmillan, 1920, 1926.

MLA (9th ed.) Citation

Von Arnim, Elizabeth. In the Mountains. Macmillan, 1920, 1926.