Cita APA (7a ed.)
Journal of the British Interplanetary Society [J Br Interplanet Soc] NLMUID: 100971308.
Cita Chicago Style (17a ed.)
Journal of the British Interplanetary Society [J Br Interplanet Soc] NLMUID: 100971308.
Cita MLA (9a ed.)
Journal of the British Interplanetary Society [J Br Interplanet Soc] NLMUID: 100971308.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.