APA
Stielstra G., . (2005). PyroMarketing. New York: Harper Business.
Chicago
Stielstra Greg, . 2005. PyroMarketing. New York: Harper Business.
Harvard
Stielstra G., . (2005). PyroMarketing. New York: Harper Business.
MLA
Stielstra Greg, . PyroMarketing. New York: Harper Business. 2005.