APA
D U pont de Nemours and Company, D U pont de Nemours and Company, . (1999). 1998 Annual report. Wilmington: D U Pont.
Chicago
D U pont de Nemours and Company, D U pont de Nemours and Company, . 1999. 1998 Annual report. Wilmington: D U Pont.
Harvard
D U pont de Nemours and Company, D U pont de Nemours and Company, . (1999). 1998 Annual report. Wilmington: D U Pont.
MLA
D U pont de Nemours and Company, D U pont de Nemours and Company, . 1998 Annual report. Wilmington: D U Pont. 1999.
