APA

Nickle D. A., .Katydids of Panama (<Orthoptera: Tettigoniidae>). : .

Chicago

Nickle David A, .Katydids of Panama (<Orthoptera: Tettigoniidae>). : .

Harvard

Nickle D. A., .Katydids of Panama (<Orthoptera: Tettigoniidae>). : .

MLA

Nickle David A, .: . .