(2021). Carbon Trends. Elsevier.
Tohutoru Kātū Chicago (17th ed.)Carbon Trends. Elsevier, 2021.
Tohutoro MLA (9th ed.)Carbon Trends. Elsevier, 2021.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)