APA

Ewan J., .Review of the neotropical lisianthoid genus Lagenanthus (<Gentianaceae>). : .

Chicago

Ewan Joseph, .Review of the neotropical lisianthoid genus Lagenanthus (<Gentianaceae>). : .

Harvard

Ewan J., .Review of the neotropical lisianthoid genus Lagenanthus (<Gentianaceae>). : .

MLA

Ewan Joseph, .: . .