APA (7th ed.) Citation
Wulff, J. (1942). Powder metallurgy. [s.n.].
Chicago Style (17th ed.) Citation
Wulff, John. Powder Metallurgy. [s.l.]: [s.n.], 1942.
MLA (9th ed.) Citation
Wulff, John. Powder Metallurgy. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.