APA (7th ed.) Citation

Berg, J., & Krüssmann, G. (1951). Freiland-Rhododendron. Ulmer.

Chicago Style (17th ed.) Citation

Berg, Johann, and Gerd Krüssmann. Freiland-Rhododendron. Stuttgart: Ulmer, 1951.

MLA (9th ed.) Citation

Berg, Johann, and Gerd Krüssmann. Freiland-Rhododendron. Ulmer, 1951.

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