Cita APA (7th ed.)
Jekeli, C., Bastos, L., & Fernandes, J. (2005). Gravity, Geoid and Space Missions: GGSM 2004 IAG International Symposium Porto, Portugal August 30 September 3, 2004. Springer Berlin Heidelberg. https://doi.org/10.1007/b138327
Cita Chicago (17th ed.)
Jekeli, Christopher, Luisa Bastos, i Joana Fernandes. Gravity, Geoid and Space Missions: GGSM 2004 IAG International Symposium Porto, Portugal August 30 September 3, 2004. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138327.
Cita MLA (9th ed.)
Jekeli, Christopher, et al. Gravity, Geoid and Space Missions: GGSM 2004 IAG International Symposium Porto, Portugal August 30 September 3, 2004. Springer Berlin Heidelberg, 2005. https://doi.org/10.1007/b138327.
Atenció: Aquestes cites poden no estar 100% correctes.