APA (7th ed.) Citation

Gratale, J. M. Walberg, Eric.  Postmodern Imperialism:  Geopolitics and the Great Games.  . European Association for American Studies.

Chicago Style (17th ed.) Citation

Gratale, Joseph Michael. Walberg, Eric.  Postmodern Imperialism:  Geopolitics and the Great Games.  . European Association for American Studies.

MLA (9th ed.) Citation

Gratale, Joseph Michael. Walberg, Eric.  Postmodern Imperialism:  Geopolitics and the Great Games.  . European Association for American Studies.

Warning: These citations may not always be 100% accurate.