Humboldt, F. E. A. (1850). Views of Nature: Or contemplations on the sublime phenomena of creation; with illustrations. By Alexander von Humboldt. Translated from the german by E.C. Otté, and Henry G. Bohn. With a frontispiece from a sketch by the author, a facsimile of his handwriting, and a comprehensive index (1a. ed.). Henry G. Bohn, York street, Covent Garden.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Humboldt, Federico Enrique Alejandro. Views of Nature: Or Contemplations on the Sublime Phenomena of Creation; with Illustrations. By Alexander Von Humboldt. Translated from the German by E.C. Otté, and Henry G. Bohn. With a Frontispiece from a Sketch by the Author, a Facsimile of His Handwriting, and a Comprehensive Index. 1a. ed. Londres: Henry G. Bohn, York street, Covent Garden, 1850.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Humboldt, Federico Enrique Alejandro. Views of Nature: Or Contemplations on the Sublime Phenomena of Creation; with Illustrations. By Alexander Von Humboldt. Translated from the German by E.C. Otté, and Henry G. Bohn. With a Frontispiece from a Sketch by the Author, a Facsimile of His Handwriting, and a Comprehensive Index. 1a. ed. Henry G. Bohn, York street, Covent Garden, 1850.