APA
Gitlow H., . (1989). Tolls and methods for the improvement of qualitty. Boston: Irwin.
Chicago
Gitlow Howard, . 1989. Tolls and methods for the improvement of qualitty. Boston: Irwin.
Harvard
Gitlow H., . (1989). Tolls and methods for the improvement of qualitty. Boston: Irwin.
MLA
Gitlow Howard, . Tolls and methods for the improvement of qualitty. Boston: Irwin. 1989.