Shepherd, G. M. (2004). The Human Sense of Smell: Are We Better Than We Think? Public Library of Science.
Chicago-tyylinen lähdeviittausShepherd, Gordon M. The Human Sense of Smell: Are We Better Than We Think? Public Library of Science, 2004.
MLA-viiteShepherd, Gordon M. The Human Sense of Smell: Are We Better Than We Think? Public Library of Science, 2004.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.