APA (7e ed.) Bronvermelding

Allen, R. (2007). The essentials of science, grades 7-12: Effective curriculum, instruction, and assessment. Association for Supervision and Curriculum Development.

Chicago (17e ed.) Bronvermelding

Allen, Rick. The Essentials of Science, Grades 7-12: Effective Curriculum, Instruction, and Assessment. Alexandria, Va.: Association for Supervision and Curriculum Development, 2007.

MLA (9e ed.) Bronvermelding

Allen, Rick. The Essentials of Science, Grades 7-12: Effective Curriculum, Instruction, and Assessment. Association for Supervision and Curriculum Development, 2007.