APA (7th ed.) Citation

Malaquias, I. c. 2. J., Gomes, E. V., & Martins, D. (2005). The genesis of geomagnetic observatories in Portugal.

Chicago Style (17th ed.) Citation

Malaquias, Isabel ca. 20./21. Jh, Emília Vaz Gomes, and Décio Martins. The Genesis of Geomagnetic Observatories in Portugal. 2005.

MLA (9th ed.) Citation

Malaquias, Isabel ca. 20./21. Jh, et al. The Genesis of Geomagnetic Observatories in Portugal. 2005.