Cita APA (7a ed.)

Eckstut, S., Lubelska, D., & Parker, S. (1990). First impressions. Longman.

Cita Chicago Style (17a ed.)

Eckstut, Samuela, Diana Lubelska, y Sue Parker. First Impressions. Essex: Longman, 1990.

Cita MLA (8a ed.)

Eckstut, Samuela, et al. First Impressions. Longman, 1990.