APA Style

Brulles, D, B, K. (2018). A teacher's guide to flexible grouping and collaborative learning : form, manage, assess, and differentiate in groups . : Free Spirit Publishing.

MLA Style

Brulles, Dina;, Brown,, Karen. "A teacher's guide to flexible grouping and collaborative learning : form, manage, assess, and differentiate in groups". : Free Spirit Publishing, 2018. BOOK.