APA (7th ed.) Citation

Kalb, K., & Aptroot, A. (1981). Lichenes Neotropici. Selbstverlag.

Chicago Style (17th ed.) Citation

Kalb, Klaus, and André Aptroot. Lichenes Neotropici. Neumarkt/Opf: Selbstverlag, 1981.

MLA (9th ed.) Citation

Kalb, Klaus, and André Aptroot. Lichenes Neotropici. Selbstverlag, 1981.

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