APA (7th ed.) Citation

Lüpke, H. (1934). Professor Hoppe 50 Jahre!: H. Lüpke. Brandenburger Land.

Chicago Style (17th ed.) Citation

Lüpke, Helmut. "Professor Hoppe 50 Jahre!: H. Lüpke." Brandenburger Land 1934.

MLA (8th ed.) Citation

Lüpke, Helmut. "Professor Hoppe 50 Jahre!: H. Lüpke." Brandenburger Land, 1934.

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