Bayer AG & Goldberg, L. (1973). Psychic dependence: Definition, assessment in animals and man, theoretical and clinical implications : [Bayer-Symposium IV held at Grosse Ledder near Cologne, Germany, September 27th - October 1st]. Bayer-Symposium / Bayer Aktiengesellschaft.
Cita Chicago Style (17a ed.)Bayer AG y Leonard Goldberg. "Psychic Dependence: Definition, Assessment in Animals and Man, Theoretical and Clinical Implications : [Bayer-Symposium IV Held at Grosse Ledder Near Cologne, Germany, September 27th - October 1st]." Bayer-Symposium / Bayer Aktiengesellschaft 1973.
Cita MLA (8a ed.)Bayer AG y Leonard Goldberg. "Psychic Dependence: Definition, Assessment in Animals and Man, Theoretical and Clinical Implications : [Bayer-Symposium IV Held at Grosse Ledder Near Cologne, Germany, September 27th - October 1st]." Bayer-Symposium / Bayer Aktiengesellschaft, 1973.