Cita APA (7th ed.)

Powell, S., & Smith, K. (2018). An Introduction to early childhood studies (Fourth edition.). SAGE.

Cita Chicago (17th ed.)

Powell, Sacha, i Kate Smith. An Introduction to Early Childhood Studies. Fourth edition. Los Angeles: SAGE, 2018.

Cita MLA (9th ed.)

Powell, Sacha, i Kate Smith. An Introduction to Early Childhood Studies. Fourth edition. SAGE, 2018.