APA (7 ম সংস্করণ) উদ্ধৃতি

Egan, G., & Cowan, M. (1979). People in systems: A model for development in the human-service professions and education. Brooks/Cole.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Egan, Gerald, এবং Michael Cowan. People in Systems: A Model for Development in the Human-service Professions and Education. Monterey, Calif: Brooks/Cole, 1979.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Egan, Gerald, এবং Michael Cowan. People in Systems: A Model for Development in the Human-service Professions and Education. Brooks/Cole, 1979.