APA
Friberg L., Vostal J., . (1972). Mercury in the environment: An epidemiololgical and toxicological appraisal. Ohio: CRC.
Chicago
Friberg Las, Vostal Jaroslav, . 1972. Mercury in the environment: An epidemiololgical and toxicological appraisal. Ohio: CRC.
Harvard
Friberg L., Vostal J., . (1972). Mercury in the environment: An epidemiololgical and toxicological appraisal. Ohio: CRC.
MLA
Friberg Las, Vostal Jaroslav, . Mercury in the environment: An epidemiololgical and toxicological appraisal. Ohio: CRC. 1972.