APA (7th ed.) Citation

Crystal Productions & Crystal Video. (1991). Maskmaking introduction. Crystal Video.

Chicago Style (17th ed.) Citation

Crystal Productions and Crystal Video. Maskmaking Introduction. Aspen, Colo.: Crystal Video, 1991.

MLA (9th ed.) Citation

Crystal Productions and Crystal Video. Maskmaking Introduction. Crystal Video, 1991.

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