APA
(1969). P/M materials standards and specifications. [s.l.]: [s.n.].
Chicago
1969. P/M materials standards and specifications. [s.l.]: [s.n.].
Harvard
(1969). P/M materials standards and specifications. [s.l.]: [s.n.].
MLA
P/M materials standards and specifications. [s.l.]: [s.n.]. 1969.
