APA (7th ed.) Citation

Sieger, R. (1926). Westeuropa. Geographie des Welthandels ; Bd. 1: Europa, 1, 509-519.

Chicago Style (17th ed.) Citation

Sieger, Robert. "Westeuropa." Geographie Des Welthandels ; Bd. 1: Europa 1 (1926): 509-519.

MLA (9th ed.) Citation

Sieger, Robert. "Westeuropa." Geographie Des Welthandels ; Bd. 1: Europa, vol. 1, 1926, pp. 509-519.

Warning: These citations may not always be 100% accurate.