APA

Samuels D., Shugart M. S., . (2010). Presidents, parties, and prime ministers. Cambridge (Massachusetts, Estados Unidos): Cambridge University Press.

Chicago

Samuels David, Shugart Matthew Soberg, . 2010. Presidents, parties, and prime ministers. Cambridge (Massachusetts, Estados Unidos): Cambridge University Press.

Harvard

Samuels D., Shugart M. S., . (2010). Presidents, parties, and prime ministers. Cambridge (Massachusetts, Estados Unidos): Cambridge University Press.

MLA

Samuels David, Shugart Matthew Soberg, . Presidents, parties, and prime ministers. Cambridge (Massachusetts, Estados Unidos): Cambridge University Press. 2010.