APA
Scharff R., Kennedy T. j. a., . (2000). Roofing handbook. New York: McGraw-Hill.
Chicago
Scharff Robert, Kennedy Terry jt author, . 2000. Roofing handbook. New York: McGraw-Hill.
Harvard
Scharff R., Kennedy T. j. a., . (2000). Roofing handbook. New York: McGraw-Hill.
MLA
Scharff Robert, Kennedy Terry jt author, . Roofing handbook. New York: McGraw-Hill. 2000.