Portugal, R. C. (1961). Politics - pastime or serious business. Philippine Journal of Public Administration.
Chicago (17e ed.) BronvermeldingPortugal, Ramon C. "Politics - Pastime or Serious Business." Philippine Journal of Public Administration 1961.
MLA (9e ed.) BronvermeldingPortugal, Ramon C. "Politics - Pastime or Serious Business." Philippine Journal of Public Administration, 1961.
Let op: Deze citaties zijn niet altijd 100% accuraat.