APA (7th ed.) Citation

Simmel, O. (1950). Der Fels. Stimmen der Zeit, 147(4), 307-311.

Chicago Style (17th ed.) Citation

Simmel, Oskar. "Der Fels." Stimmen Der Zeit 147, no. 4 (1950): 307-311.

MLA (9th ed.) Citation

Simmel, Oskar. "Der Fels." Stimmen Der Zeit, vol. 147, no. 4, 1950, pp. 307-311.

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