Pfeifer, G. (1959). Die neue Welt in der Perspektive Alexander von Humboldts. Erdkunde, 13(4), .
Chicago Style (17th ed.) CitationPfeifer, Gottfried. "Die Neue Welt in Der Perspektive Alexander Von Humboldts." Erdkunde 13, no. 4 (1959).
MLA (9th ed.) CitationPfeifer, Gottfried. "Die Neue Welt in Der Perspektive Alexander Von Humboldts." Erdkunde, vol. 13, no. 4, 1959.
Warning: These citations may not always be 100% accurate.