Cita APA (7th ed.)

Alcazar, A. V., De Guzman, L. S., Santos, T. L., & Ho, L. P. (2009). Learning sources of science concepts and process skills of grade 2 pupils.

Cita Chicago (17th ed.)

Alcazar, Antoniette V., Ligaya S. De Guzman, Thelma L. Santos, i Leticia P. Ho. Learning Sources of Science Concepts and Process Skills of Grade 2 Pupils. 2009.

Cita MLA (9th ed.)

Alcazar, Antoniette V., et al. Learning Sources of Science Concepts and Process Skills of Grade 2 Pupils. 2009.