Cita APA (7th ed.)
Diettrich, S. d. R. Around the World Program: The Philippine Islands. Doubleday.
Cita Chicago (17th ed.)
Diettrich, Sigismond de R. Around the World Program: The Philippine Islands. Nueva York, EUA: Doubleday.
Cita MLA (9th ed.)
Diettrich, Sigismond de R. Around the World Program: The Philippine Islands. Doubleday.
Atenció: Aquestes cites poden no estar 100% correctes.