APA-čujuhus (7. p.)

Gerritsen Margot & Smartenergy. <U+00BF>Can we effectively and cleanly produce heavy oil resources?

Chicago-čujuhus (17. p.)

Gerritsen Margot juo Smartenergy. <U+00BF>Can We Effectively and Cleanly Produce Heavy Oil Resources?

MLA-čujuhus (9. p.)

Gerritsen Margot juo Smartenergy. <U+00BF>Can We Effectively and Cleanly Produce Heavy Oil Resources?

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