Cita APA (7a ed.)

Preub, K., & Simen, R. H. (1987). Space research in the Federal Republic of Germany. Inter Nationes.

Cita Chicago Style (17a ed.)

Preub, Karl-Heinz, y Rolf H. Simen. Space Research in the Federal Republic of Germany. Bonn, West Germany: Inter Nationes, 1987.

Cita MLA (9a ed.)

Preub, Karl-Heinz, y Rolf H. Simen. Space Research in the Federal Republic of Germany. Inter Nationes, 1987.