Thorvaldur Thorsteinsson.

MLA

Thorvaldur Thorsteinsson. 100 [S.l.]: [s.n.], 1989.

APA

(1989). Thorvaldur Thorsteinsson. 100 [S.l.]: [s.n.].

Chicago

Thorvaldur Thorsteinsson. 100 [S.l.]: [s.n.], 1989.