Gaya APA

Plus, S. (1987). Additional Instructions for The Installation and Operation of Sybiz Plus Revision L: Sybiz Plus (-). Australia: Sybiz Software Pty. Ltd..

Gaya MLA

Plus, Sybiz. "Additional Instructions for The Installation and Operation of Sybiz Plus Revision L: Sybiz Plus". - Australia: Sybiz Software Pty. Ltd., 1987. Text.