Kerns, Robert L. Photojournalism : photography with a purpose / Robert L. Kerns. - Englewood Cliffs, N.J. : Prentice-Hall, 1980. - xvii, 348 p. : ill. ; 24 cm. Includes index. Bibliography: p. 335-339. ISBN: 0136656951 Subjects--Topical Terms: Photography, Journalistic.