APA (7th ed.) Citation

(2003). International Correspondence School - Spanish Lesson #9. Project Gutenberg.

Chicago Style (17th ed.) Citation

International Correspondence School - Spanish Lesson #9. Project Gutenberg, 2003.

MLA (9th ed.) Citation

International Correspondence School - Spanish Lesson #9. Project Gutenberg, 2003.

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