APA (7th ed.) Citation

Spinelli, J. (2009). Knots in my yo-yo string.

Chicago Style (17th ed.) Citation

Spinelli, Jerry. Knots in My Yo-yo String. 2009.

MLA (8th ed.) Citation

Spinelli, Jerry. Knots in My Yo-yo String. 2009.

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