Παραπομπή σε μορφή APA (7η εκδ.)

Johansson, Å. (1984). The geology and genesis of lead-zinc veins in Sweden. Dept. of Geology, Stockholm University.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Johansson, Åke. The Geology and Genesis of Lead-zinc Veins in Sweden. Stockholm, Sweden: Dept. of Geology, Stockholm University, 1984.

Παραπομπή σε μορφή MLA (8th εκδ.)

Johansson, Åke. The Geology and Genesis of Lead-zinc Veins in Sweden. Dept. of Geology, Stockholm University, 1984.