Message preparation
Subtitle: the nature of proof
By: [by] Erwin P. Bettinghaus.
Series: The Bobbs-Merrill series in speech communication, 1
Publisher: Bobbs-Merrill
Published: 1966
Place of publication: Indianapolis
Language: eng
Number of pages: 127
Subjects: Public speaking; Belief and doubt
Notes: Bibliography: p. 121-122.
Second ed. published in 1972 under title: The nature of proof.