Pfeifer, G. (1964). Deutsche Siedlung in Rio Grande do Sul. Erdkunde, 18(4), .
Chicago Style (17th ed.) CitationPfeifer, Gottfried. "Deutsche Siedlung in Rio Grande Do Sul." Erdkunde 18, no. 4 (1964).
MLA (9th ed.) CitationPfeifer, Gottfried. "Deutsche Siedlung in Rio Grande Do Sul." Erdkunde, vol. 18, no. 4, 1964.
Warning: These citations may not always be 100% accurate.