APA-viite (7. p.)
Gracie, C., & Lamont, E. (2012). Spring wildflowers of the Northeast: A natural history. Princeton University Press.
Chicago-viite (17. p.)
Gracie, Carol, ja Eric Lamont. Spring Wildflowers of the Northeast: A Natural History. Princeton, N.J.: Princeton University Press, 2012.
MLA-viite (9. p.)
Gracie, Carol, ja Eric Lamont. Spring Wildflowers of the Northeast: A Natural History. Princeton University Press, 2012.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.