APA (7e ed.) Bronvermelding

HEIMLER, C. H., DANIEL, L., & LOCKARD, J. D. (1984). Focus on life science. Charles E. Merrill.

Chicago (17e ed.) Bronvermelding

HEIMLER, Charles H., Lucy DANIEL, en J. David LOCKARD. Focus on Life Science. Columbus: Charles E. Merrill, 1984.

MLA (9e ed.) Bronvermelding

HEIMLER, Charles H., et al. Focus on Life Science. Charles E. Merrill, 1984.