Cita APA (7th ed.)

Oberth, H., & Sorensen, T. C. (2014). Rocket into planetary space. Oldenbourg Wissenschaftsverlag GmbH.

Cita Chicago (17th ed.)

Oberth, Hermann, i Trevor C. Sorensen. Rocket into Planetary Space. München, Germany: Oldenbourg Wissenschaftsverlag GmbH, 2014.

Cita MLA (9th ed.)

Oberth, Hermann, i Trevor C. Sorensen. Rocket into Planetary Space. Oldenbourg Wissenschaftsverlag GmbH, 2014.