(2000). New business publications. P.I.E. Books.
Chicago Style aipamenaNew Business Publications. Tokyo, Japan: P.I.E. Books, 2000.
MLA aipamenaNew Business Publications. P.I.E. Books, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
(2000). New business publications. P.I.E. Books.
Chicago Style aipamenaNew Business Publications. Tokyo, Japan: P.I.E. Books, 2000.
MLA aipamenaNew Business Publications. P.I.E. Books, 2000.