APA (7th ed.) Citation

Fries, E. M., Forsgård, S., & Ryding, F. C. (1851). Hygrophori Sueciae: Quorum descriptiones. Excudebat Reg. Acad. Typograph.

Chicago Style (17th ed.) Citation

Fries, Elias Magnus, Sveno Forsgård, and Fredericus Christ Ryding. Hygrophori Sueciae: Quorum Descriptiones. Upsaliae: Excudebat Reg. Acad. Typograph, 1851.

MLA (9th ed.) Citation

Fries, Elias Magnus, et al. Hygrophori Sueciae: Quorum Descriptiones. Excudebat Reg. Acad. Typograph, 1851.