Gaya APA

Tignor, R. et al (2008). world together world apart : history of the world from the begining of humankind to the present (-). New York: Mc Graw Hill.

Gaya MLA

Tignor, Robert. et al. "world together world apart : history of the world from the begining of humankind to the present". - New York: Mc Graw Hill, 2008. Text.