Cita APA (7a ed.)

Johnston, W. A. (1968). Bidirectional interference in an A-B, C-B paradigm. [s.n.].

Cita Chicago Style (17a ed.)

Johnston, William A. Bidirectional Interference in an A-B, C-B Paradigm. [S.l.]: [s.n.], 1968.

Cita MLA (9a ed.)

Johnston, William A. Bidirectional Interference in an A-B, C-B Paradigm. [s.n.], 1968.