Trích dẫn APA

Engel, B. (2007). The Jekyll and Hyde syndrome: What to do if someone in your life has a dual personality? or if you do. Hoboken, N.J: John Wiley.

Trích dẫn kiểu Chicago

Engel, Beverly. The Jekyll and Hyde Syndrome: What to Do If Someone in Your Life Has a Dual Personality? or If You Do. Hoboken, N.J: John Wiley, 2007.

Trích dẫn MLA

Engel, Beverly. The Jekyll and Hyde Syndrome: What to Do If Someone in Your Life Has a Dual Personality? or If You Do. Hoboken, N.J: John Wiley, 2007.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.