(2015). 销售与市场：评论版．2015,no.9-12.
Chicago Style aipamena销售与市场：评论版．2015,no.9-12. 2015.
MLA aipamena销售与市场：评论版．2015,no.9-12. 2015.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena
(2015). 销售与市场：评论版．2015,no.9-12.
Chicago Style aipamena销售与市场：评论版．2015,no.9-12. 2015.
MLA aipamena销售与市场：评论版．2015,no.9-12. 2015.