Cita APA (7th ed.)

Samson, R. W. (1970). Problem solving improvement: A program for self-instruction. McGraw-Hill.

Cita Chicago (17th ed.)

Samson, Richard W. Problem Solving Improvement: A Program for Self-instruction. New York: McGraw-Hill, 1970.

Cita MLA (9th ed.)

Samson, Richard W. Problem Solving Improvement: A Program for Self-instruction. McGraw-Hill, 1970.