Gaya APA

Friedman, Thomas L. (2009). Hot, flat and crowded . Jakarta: Gramedia Pustaka Utama.

Gaya Chicago

Friedman, Thomas L. Hot, flat and crowded. Jakarta: Gramedia Pustaka Utama, 2009. Text.

Gaya MLA

Friedman, Thomas L. Hot, flat and crowded. Jakarta: Gramedia Pustaka Utama, 2009. Text.

Gaya Turabian

Friedman, Thomas L. Hot, flat and crowded. Jakarta: Gramedia Pustaka Utama, 2009. Print.