APA
Mårtensson O., . (1955). Bryophytes of the Torneträsk Area, Northern Swedish Lappland. Stockholm: Almqvist & Wiksells boktr.
Chicago
Mårtensson Olle, . 1955. Bryophytes of the Torneträsk Area, Northern Swedish Lappland. Stockholm: Almqvist & Wiksells boktr.
Harvard
Mårtensson O., . (1955). Bryophytes of the Torneträsk Area, Northern Swedish Lappland. Stockholm: Almqvist & Wiksells boktr.
MLA
Mårtensson Olle, . Bryophytes of the Torneträsk Area, Northern Swedish Lappland. Stockholm: Almqvist & Wiksells boktr. 1955.