Davis, H., & Denison, J. (1993). Competency Exams for Drafting-Related Occupations. Student and Instructor Manuals.
Citazione stile Chigago Style (17a edizione)Davis, Harley, e John Denison. Competency Exams for Drafting-Related Occupations. Student and Instructor Manuals. 1993.
Citatione MLA (9a ed.)Davis, Harley, e John Denison. Competency Exams for Drafting-Related Occupations. Student and Instructor Manuals. 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.