APA
Dirr M., Heuser C. W., . (1987). The reference manual of woody plant propagation. Athens: Varsity Press.
Chicago
Dirr Michael, Heuser Charles W, . 1987. The reference manual of woody plant propagation. Athens: Varsity Press.
Harvard
Dirr M., Heuser C. W., . (1987). The reference manual of woody plant propagation. Athens: Varsity Press.
MLA
Dirr Michael, Heuser Charles W, . The reference manual of woody plant propagation. Athens: Varsity Press. 1987.