(2008). How it's made. Series four: 3-D Commercial signs, hardwood floors, corrugated polyethylene pipe, and mattresses [DVD]. Estados Unidos de América: Discovery Communications.
Chicago Style CitationHow It's Made. Series Four: 3-D Commercial Signs, Hardwood Floors, Corrugated Polyethylene Pipe, and Mattresses [DVD]. Estados Unidos de América: Discovery Communications, 2008.
MLA CitationHow It's Made. Series Four: 3-D Commercial Signs, Hardwood Floors, Corrugated Polyethylene Pipe, and Mattresses [DVD]. Estados Unidos de América: Discovery Communications, 2008.
Warning: These citations may not always be 100% accurate.