Cita APA (7a ed.)

Kierkegaard, S., Hirsch, E., & Hirsch, R. (1955). Briefe. Eugen Diederichs.

Cita Chicago Style (17a ed.)

Kierkegaard, Søren, Emanuel Hirsch, y Rose Hirsch. Briefe. Düsseldorf: Eugen Diederichs, 1955.

Cita MLA (9a ed.)

Kierkegaard, Søren, et al. Briefe. Eugen Diederichs, 1955.