ETIG. (2005). Investor year book 2005.
Chicago Style aipamenaETIG. Investor Year Book 2005. Mumbai, 2005.
MLA aipamenaETIG. Investor Year Book 2005. 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
ETIG. (2005). Investor year book 2005.
Chicago Style aipamenaETIG. Investor Year Book 2005. Mumbai, 2005.
MLA aipamenaETIG. Investor Year Book 2005. 2005.