APA
Stewart W. N., Rathwell G. W., . (1993). Paleobotany and the evolution of plant. New York: Cambridge University Press.
Chicago
Stewart Wilson N, Rathwell Gary W, . 1993. Paleobotany and the evolution of plant. New York: Cambridge University Press.
Harvard
Stewart W. N., Rathwell G. W., . (1993). Paleobotany and the evolution of plant. New York: Cambridge University Press.
MLA
Stewart Wilson N, Rathwell Gary W, . Paleobotany and the evolution of plant. New York: Cambridge University Press. 1993.