Cita APA (7th ed.)

Humboldt, A. <., & Hauff, H. (1861). Alexander von Humboldt's Reise in die Aequinoctial-Gegenden des Neuen Continents. Cotta.

Cita Chicago (17th ed.)

Humboldt, Alexander <<von>>, i Hermann Hauff. Alexander Von Humboldt's Reise in Die Aequinoctial-Gegenden Des Neuen Continents. Stuttgart: Cotta, 1861.

Cita MLA (9th ed.)

Humboldt, Alexander <<von>>, i Hermann Hauff. Alexander Von Humboldt's Reise in Die Aequinoctial-Gegenden Des Neuen Continents. Cotta, 1861.