APA

Sipman H. J. M., .Additions to the lichen flora of Araracuara (<colombian Amazonia>). : .

Chicago

Sipman Harrie J M, .Additions to the lichen flora of Araracuara (<colombian Amazonia>). : .

Harvard

Sipman H. J. M., .Additions to the lichen flora of Araracuara (<colombian Amazonia>). : .

MLA

Sipman Harrie J M, .: . .