APA

Barr T. C., .Synopsis of the cave beetles of the genus Pseudanophthalmus of the mitchell plain in sothern Indiana (<Coleoptera, Carabidae>). : .

Chicago

Barr Thomas C, .Synopsis of the cave beetles of the genus Pseudanophthalmus of the mitchell plain in sothern Indiana (<Coleoptera, Carabidae>). : .

Harvard

Barr T. C., .Synopsis of the cave beetles of the genus Pseudanophthalmus of the mitchell plain in sothern Indiana (<Coleoptera, Carabidae>). : .

MLA

Barr Thomas C, .: . .