Ritchie, L. S., & Fox, I. (1968). Comprehensive laboratory evaluations of the molluscicide 2',5-dichloro-4'-nitro-3-phenylsalicylanilide (PSA): Time-concentration relationships and susceptibilities of stage-size arrays of snails. World Health Organization.
Čikaški stil citiranjaRitchie, L. S., i I. Fox. Comprehensive Laboratory Evaluations of the Molluscicide 2',5-dichloro-4'-nitro-3-phenylsalicylanilide (PSA): Time-concentration Relationships and Susceptibilities of Stage-size Arrays of Snails. World Health Organization, 1968.
MLA način citiranjaRitchie, L. S., i I. Fox. Comprehensive Laboratory Evaluations of the Molluscicide 2',5-dichloro-4'-nitro-3-phenylsalicylanilide (PSA): Time-concentration Relationships and Susceptibilities of Stage-size Arrays of Snails. World Health Organization, 1968.