Cita APA (7th ed.)

Levine, S., & Johnstone, L. (1996). Science around the world: Travel through time and space with fun experiments and projects. Wiley.

Cita Chicago (17th ed.)

Levine, Shar, i Leslie Johnstone. Science Around the World: Travel Through Time and Space with Fun Experiments and Projects. New York: Wiley, 1996.

Cita MLA (9th ed.)

Levine, Shar, i Leslie Johnstone. Science Around the World: Travel Through Time and Space with Fun Experiments and Projects. Wiley, 1996.