APA
Hewlett Packard, . (1987). Information Processing - text communication- Message oriented text interchange system user agent sublayer - Inter-personal messaging user agent - Message interchange formats and protocols. USA: Hewlett Packard, Inc.
Chicago
Hewlett Packard, . 1987. Information Processing - text communication- Message oriented text interchange system user agent sublayer - Inter-personal messaging user agent - Message interchange formats and protocols. USA: Hewlett Packard, Inc.
Harvard
Hewlett Packard, . (1987). Information Processing - text communication- Message oriented text interchange system user agent sublayer - Inter-personal messaging user agent - Message interchange formats and protocols. USA: Hewlett Packard, Inc.
MLA
Hewlett Packard, . Information Processing - text communication- Message oriented text interchange system user agent sublayer - Inter-personal messaging user agent - Message interchange formats and protocols. USA: Hewlett Packard, Inc. 1987.