APA (7th ed.) Citation
Stephan, B., Wagner, I., & Kleinschmit, J. (2003). Wild apple and pear (Malus sylvestris and Pyrus pyraster).
Chicago Style (17th ed.) Citation
Stephan, B.R, I. Wagner, and J. Kleinschmit. Wild Apple and Pear (Malus Sylvestris and Pyrus Pyraster). 2003.
MLA (9th ed.) Citation
Stephan, B.R, et al. Wild Apple and Pear (Malus Sylvestris and Pyrus Pyraster). 2003.
Warning: These citations may not always be 100% accurate.