KRUZEL, S. L. (1990). Import/export Procedures Sandra L. Kruzel; Frank Reynolds. South-Western Publishing.
Chicago-viite (17. p.)KRUZEL, Sandra L. Import/export Procedures Sandra L. Kruzel; Frank Reynolds. South-Western Publishing, 1990.
MLA-viite (8. p.)KRUZEL, Sandra L. Import/export Procedures Sandra L. Kruzel; Frank Reynolds. South-Western Publishing, 1990.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.