ARNOLD, C. A. (1947). An introduction to paleobotany. McGraw Hill.
Lua i Stíl Chicago (17ú heag.)ARNOLD, Chester A. An Introduction to Paleobotany. McGraw Hill, 1947.
Lua MLA (8ú heag.)ARNOLD, Chester A. An Introduction to Paleobotany. McGraw Hill, 1947.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.