Gaya APA
Jorgensen, K, E. (2018).
International Relations Theory : a new introduction (2nd Ed.).
London:
Palgrave Macmillan.
Gaya MLA
Jorgensen, Knud, Erik.
"International Relations Theory : a new introduction".
2nd Ed.
London:
Palgrave Macmillan,
2018.
Text.