APA (7th ed.) Citation

Schwan, H. (1977). Development and testing of a method to derive an instrumental system of positions and proper motions of stars. Braun.

Chicago Style (17th ed.) Citation

Schwan, H. Development and Testing of a Method to Derive an Instrumental System of Positions and Proper Motions of Stars. Karlsruhe: Braun, 1977.

MLA (9th ed.) Citation

Schwan, H. Development and Testing of a Method to Derive an Instrumental System of Positions and Proper Motions of Stars. Braun, 1977.