APA (7th ed.) Zitazioa
Beer, A., & Beer, P. (1975). Kepler, four hundred years: Proceedings of conferences held in honour of Johannes Kepler. Pergamon Pr.
Chicago Style (17th ed.) Zitazioa
Beer, Arthur, eta Peter Beer. Kepler, Four Hundred Years: Proceedings of Conferences Held in Honour of Johannes Kepler. Oxford [usw.], Braunschweig: Pergamon Pr, 1975.
MLA (9th ed.) Zitazioa
Beer, Arthur, eta Peter Beer. Kepler, Four Hundred Years: Proceedings of Conferences Held in Honour of Johannes Kepler. Pergamon Pr, 1975.
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