APA

Jeffers H. P., . (1991). Who killed Precious?: how FBI special agents combine high technology and psychology to identify violent criminals. New York, N.Y: Pharos Books.

Chicago

Jeffers H Paul, . 1991. Who killed Precious?: how FBI special agents combine high technology and psychology to identify violent criminals. New York, N.Y: Pharos Books.

Harvard

Jeffers H. P., . (1991). Who killed Precious?: how FBI special agents combine high technology and psychology to identify violent criminals. New York, N.Y: Pharos Books.

MLA

Jeffers H Paul, . Who killed Precious?: how FBI special agents combine high technology and psychology to identify violent criminals. New York, N.Y: Pharos Books. 1991.