Cita APA (7th ed.)

(1971). Johannes Kepler: 1571-1971 (1a. ed.). Inter Nationes Bonn-Bad Godesberg.

Cita Chicago (17th ed.)

Johannes Kepler: 1571-1971. 1a. ed. Múnich: Inter Nationes Bonn-Bad Godesberg, 1971.

Cita MLA (9th ed.)

Johannes Kepler: 1571-1971. 1a. ed. Inter Nationes Bonn-Bad Godesberg, 1971.