APA
Ockerman A. E. (., . (1968). Selected mechanized scientific and technical information systems. Washington: Herner & Company.
Chicago
Ockerman Anna E (Ed.), . 1968. Selected mechanized scientific and technical information systems. Washington: Herner & Company.
Harvard
Ockerman A. E. (., . (1968). Selected mechanized scientific and technical information systems. Washington: Herner & Company.
MLA
Ockerman Anna E (Ed.), . Selected mechanized scientific and technical information systems. Washington: Herner & Company. 1968.
