APA (7th ed.) Citation

Childs, G. W. (2011). Your free open source music studio. Course Technology PTR.

Chicago Style (17th ed.) Citation

Childs, G. W. Your Free Open Source Music Studio. Boston, MA: Course Technology PTR, 2011.

MLA (9th ed.) Citation

Childs, G. W. Your Free Open Source Music Studio. Course Technology PTR, 2011.

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