APA-viite (7. p.)

YouTube. Use of Spiral Heat Exchangers to Maximize Profit from Heavy Oil Processes.

Chicago-viite (17. p.)

YouTube. Use of Spiral Heat Exchangers to Maximize Profit from Heavy Oil Processes.

MLA-viite (9. p.)

YouTube. Use of Spiral Heat Exchangers to Maximize Profit from Heavy Oil Processes.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.