APA
(1991). Surface magnetism: controversial point. [s.l.]: [s.n.].
Chicago
1991. Surface magnetism: controversial point. [s.l.]: [s.n.].
Harvard
(1991). Surface magnetism: controversial point. [s.l.]: [s.n.].
MLA
Surface magnetism: controversial point. [s.l.]: [s.n.]. 1991.