APA (7th ed.) Citation

Geiser, S. W. (1946). Dr. Ernst Kapp, early geographer in Texas. [publisher not identified].

Chicago Style (17th ed.) Citation

Geiser, Samuel Wood. Dr. Ernst Kapp, Early Geographer in Texas. [Place of publication not identified]: [publisher not identified], 1946.

MLA (9th ed.) Citation

Geiser, Samuel Wood. Dr. Ernst Kapp, Early Geographer in Texas. [publisher not identified], 1946.