APA-viite (7. p.)
ebrary, Inc. (2004). Animal care and management at the National zoo: Interim report. National Academic Press.
Chicago-viite (17. p.)
ebrary, Inc. Animal Care and Management at the National Zoo: Interim Report. Washington, D.C.: National Academic Press, 2004.
MLA-viite (9. p.)
ebrary, Inc. Animal Care and Management at the National Zoo: Interim Report. National Academic Press, 2004.
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