Fletcher , J. E. (1981). Handbook of radio and tv broadcasting: Research procedures in audience, program and revenues. Van Nostrand Reinhold.
Tohutoru Kātū Chicago (17th ed.)Fletcher , James E. Handbook of Radio and Tv Broadcasting: Research Procedures in Audience, Program and Revenues. NewYork: Van Nostrand Reinhold, 1981.
Tohutoro MLA (9th ed.)Fletcher , James E. Handbook of Radio and Tv Broadcasting: Research Procedures in Audience, Program and Revenues. Van Nostrand Reinhold, 1981.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.