Parallela.

MLA

Rudberg, Gunnar. Parallela. Lund: C.W.K. Gleerup, 1939.

APA

Rudberg, G. (1939). Parallela. Lund: C.W.K. Gleerup.

Chicago

Rudberg, Gunnar, Parallela. Lund: C.W.K. Gleerup, 1939.