Gaya APA
Ross, John. (1991).
Chronicle of the 20th Century (ed.2).
Belgium:
Chronicle.
Gaya Chicago
Ross, John.
Chronicle of the 20th Century.
ed.2
Belgium:
Chronicle,
1991.
.
Gaya MLA
Ross, John.
Chronicle of the 20th Century.
ed.2
Belgium:
Chronicle,
1991.
.
Gaya Turabian
Ross, John.
Chronicle of the 20th Century.
ed.2
Belgium:
Chronicle,
1991.
.