Cita APA (7a ed.)

Hudgins, B. B. (1968). Problem solving in the classroom. MacMillan [etc.].

Cita Chicago Style (17a ed.)

Hudgins, Bryce Byrne. Problem Solving in the Classroom. New York [etc.]: MacMillan [etc.], 1968.

Cita MLA (9a ed.)

Hudgins, Bryce Byrne. Problem Solving in the Classroom. MacMillan [etc.], 1968.