"Gymnosperm Database: Picea sitchensis". http://www.conifers.org/pi/pic/sitchensis.htmArhivirano 2007-06-08 na Wayback Machine-u. Retrieved 2007-06-10. "This tree also has a sign nearby proclaiming it to be 'the world's largest spruce'. The two tallest on record, 96.7 m and 96.4 m, are in Prairie Creek Redwoods State Park, California"
"Gymnosperm Database: Sequoiadendron giganteum". http://www.conifers.org/cu/se2/index.htm. Retrieved 2007-06-10. "The tallest known giant sequoia is a specimen 94.9 m tall, first measured August 1998 in the Redwood Mountain Grove, California"
"Tasmania's Ten Tallest Giants". Tasmanian Giant Trees Consultative Committee. http://www.gianttrees.com.au/tall.htm. Retrieved 2009-01-07. "Height (m): 99.6; Diameter (cm): 405; Species: E. regnans; Tree identification: TT443; Name: Centurion; Location: south of Hobart; Year last measured: 2008"
Stein, W.E.; Mannolini, F.; Hernick, L.V.; Landing, E.; Berry, C.M. (2007). "Giant cladoxylopsid trees resolve the enigma of the Earth's earliest forest stumps at Gilboa.". Nature 446 (7138): 904–7. doi:10.1038/nature05705. PMID17443185
Frohlich, M.W.; Chase, M.W. (2007). "After a dozen years of progress the origin of angiosperms is still a great mystery.". Nature 450 (7173): 1184–9. doi:10.1038/nature06393. PMID18097399
"Gymnosperm Database: Picea sitchensis". http://www.conifers.org/pi/pic/sitchensis.htmArhivirano 2007-06-08 na Wayback Machine-u. Retrieved 2007-06-10. "This tree also has a sign nearby proclaiming it to be 'the world's largest spruce'. The two tallest on record, 96.7 m and 96.4 m, are in Prairie Creek Redwoods State Park, California"
