APA (7e ed.) Bronvermelding

Quandt, B., & Quappe, A. (1999). -50°: Die Expeditionsreise der Gertrude Kronthaler, Alaska 1896-1898 ; the Expedition of Gertrude Kronthaler, an Alaskan Journal, 1896-1898. Huber.

Chicago (17e ed.) Bronvermelding

Quandt, Barbara, en Andreas Quappe. -50°: Die Expeditionsreise Der Gertrude Kronthaler, Alaska 1896-1898 ; the Expedition of Gertrude Kronthaler, an Alaskan Journal, 1896-1898. Offenbach am Main: Huber, 1999.

MLA (8e ed.) Bronvermelding

Quandt, Barbara, en Andreas Quappe. -50°: Die Expeditionsreise Der Gertrude Kronthaler, Alaska 1896-1898 ; the Expedition of Gertrude Kronthaler, an Alaskan Journal, 1896-1898. Huber, 1999.