Cita APA (7a ed.)
Heimler, C. H., & Price, J. S. (1984). Focus on physical science (5.vyd.). Charles E. Merrill Publishing Company.
Cita Chicago Style (17a ed.)
Heimler, Charles H., y Jack S. Price. Focus on Physical Science. 5.vyd. Columbus: Charles E. Merrill Publishing Company, 1984.
Cita MLA (9a ed.)
Heimler, Charles H., y Jack S. Price. Focus on Physical Science. 5.vyd. Charles E. Merrill Publishing Company, 1984.
Precaución: Estas citas no son 100% exactas.