APA (7th ed.) Zitazioa
Hansen, E. R., & Müller, A. (1928). Poland's Westward Trend: With a foreword by August Müller.
Chicago Style (17th ed.) Zitazioa
Hansen, Ernst R.B, eta August Müller. Poland's Westward Trend: With a Foreword by August Müller. London, 1928.
MLA (9th ed.) Zitazioa
Hansen, Ernst R.B, eta August Müller. Poland's Westward Trend: With a Foreword by August Müller. 1928.
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