APA (7th ed.) Citation

Seeliger, R. (1934). Beobachtungen an Malus - Arten ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Seeliger, Rudolf. Beobachtungen an Malus - Arten. [Sonderdr.]. 1934.

MLA (9th ed.) Citation

Seeliger, Rudolf. Beobachtungen an Malus - Arten. [Sonderdr.]. 1934.

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