APA (7th ed.) Citation

(1997). Hilmar Kopper's courtesy call to President Ferdinand Marcos [sound recoding].

Chicago Style (17th ed.) Citation

Hilmar Kopper's Courtesy Call to President Ferdinand Marcos [sound Recoding]. 1997.

MLA (9th ed.) Citation

Hilmar Kopper's Courtesy Call to President Ferdinand Marcos [sound Recoding]. 1997.

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