Παραπομπή σε μορφή APA (7η εκδ.)

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-Verlag Berlin Heidelberg.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Jekeli, Christopher, Luisa Bastos, και Joana Fernandes. Gravity, Geoid and Space Missions: GGSM 2004 IAG International Symposium Porto, Portugal August 30 – September 3, 2004. Berlin, Heidelberg: Springer-Verlag Berlin Heidelberg, 2005.

Παραπομπή σε μορφή MLA (8th εκδ.)

Jekeli, Christopher, et al. Gravity, Geoid and Space Missions: GGSM 2004 IAG International Symposium Porto, Portugal August 30 – September 3, 2004. Springer-Verlag Berlin Heidelberg, 2005.