APA (7th ed.) Citation

Pyle, F. W. An ancient people and their problems. Philippine Press Bureau.

Chicago Style (17th ed.) Citation

Pyle, Frank Wilken. An Ancient People and Their Problems. Washington, D. C: Philippine Press Bureau.

MLA (9th ed.) Citation

Pyle, Frank Wilken. An Ancient People and Their Problems. Philippine Press Bureau.

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