Analysis of information sources in references of the Wikipedia article "Pitbull" in Vietnamese language version.
|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)|publisher=
(trợ giúp)