APA استشهاد

Williams, O., & ...[et al.]. Laboratory exercises for biological science. Lea $febiger.

استشهاد بنمط شيكاغو

Williams, Olwen, و ...[et al.]. Laboratory Exercises for Biological Science. Phlioadelphia: Lea $febiger.

MLA استشهاد

Williams, Olwen, و ...[et al.]. Laboratory Exercises for Biological Science. Lea $febiger.