Cita APA (7a ed.)

Gerbner, G., & Signorielli, N. (1990). Violence profile 1967 through 1988 - 89: Enduring patterns. [Dep. of Communication, Univ. of Delaware].

Cita Chicago Style (17a ed.)

Gerbner, George, y Nancy Signorielli. Violence Profile 1967 Through 1988 - 89: Enduring Patterns. [S.l.]: [Dep. of Communication, Univ. of Delaware], 1990.

Cita MLA (9a ed.)

Gerbner, George, y Nancy Signorielli. Violence Profile 1967 Through 1988 - 89: Enduring Patterns. [Dep. of Communication, Univ. of Delaware], 1990.