APA (7th ed.) Citation

(2011). GF, GFM, GFS ([1st ed.].). [DC Swiss].

Chicago Style (17th ed.) Citation

GF, GFM, GFS. [1st ed.]. [Malleray]: [DC Swiss], 2011.

MLA (9th ed.) Citation

GF, GFM, GFS. [1st ed.]. [DC Swiss], 2011.

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