APA Style

Galløe, O. (1927). Natural history of the danish lichens: Original investigations based upon new principles (Part II). : H. Aschehoug & Co., Kopenhagen.

MLA Style

Galløe, Olaf. "Natural history of the danish lichens: Original investigations based upon new principles". Part II : H. Aschehoug & Co., Kopenhagen, 1927. Digital.