Using questionnaires and interviews the artist and then separate the study population is an issue. The average value per cent offer on the table and sort images.
Using questionnaires and interviews, master artists. And demographic studies and to separate the issues. Averages and percentages. Presented in table form and composition.
By using questionnaires and interviewing artists. The population studies and was used to isolate point is the average percentage, presented in the form ตารางและ essay.