APA (7th ed.) Citation

(1973). Heavy metals [slaid]. Chapstow Gwent, UK : Audio-Visual Productions.

Chicago Style (17th ed.) Citation

Heavy Metals [slaid]. Chapstow Gwent, UK : Audio-Visual Productions, 1973.

MLA (9th ed.) Citation

Heavy Metals [slaid]. Chapstow Gwent, UK : Audio-Visual Productions, 1973.

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