APA Style

Erlank, S, L, C. (1998). Official PowerBuilder® 6 Fundamentals (2nd Edition). London / United Kingdom (since: Coriolis Group (for International Thomson Computer Press / ITP).

MLA Style

Erlank, Steve;, Levin,, Craig. "Official PowerBuilder® 6 Fundamentals". 2nd Edition London / United Kingdom (since: Coriolis Group (for International Thomson Computer Press / ITP), 1998. Text.