Ovid Technologies, Inc. (Firm). National Library of Medicine (U.S.). (1998). BioethicsLine [computer file]. Distributed under license from the National Library of Medicine by Ovid Technologies.
Čikaški stil citiranja (17. izdanje)Ovid Technologies, Inc. (Firm). National Library of Medicine (U.S.). BioethicsLine [computer File]. s.l: Distributed under license from the National Library of Medicine by Ovid Technologies, 1998.
MLA način citiranja (9. izdanje)Ovid Technologies, Inc. (Firm). National Library of Medicine (U.S.). BioethicsLine [computer File]. Distributed under license from the National Library of Medicine by Ovid Technologies, 1998.
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