APA
W.H.O, . (1986). Basic tests for pharmaceutical substances. World health organisation, Geneva: .
Chicago
W.H.O, . 1986. Basic tests for pharmaceutical substances. World health organisation, Geneva: .
Harvard
W.H.O, . (1986). Basic tests for pharmaceutical substances. World health organisation, Geneva: .
MLA
W.H.O, . Basic tests for pharmaceutical substances. World health organisation, Geneva: . 1986.