Cita APA (7th ed.)

Challoner Jack. Science all around us, disney Children's encyclopedia. Euro Books.

Cita Chicago (17th ed.)

Challoner Jack. Science All Around Us, Disney Children's Encyclopedia. India: Euro Books.

Cita MLA (9th ed.)

Challoner Jack. Science All Around Us, Disney Children's Encyclopedia. Euro Books.

Atenció: Aquestes cites poden no estar 100% correctes.