9780134402321_TestBank_TB_Engleberg_Chapter_1_32492 9780134402321_TestBank_TB_Engleberg_Chapter_1_32492 administrator Test Bank: Working in Groups: Communication Principles and Strategies, 7th Edition, Isa N. Engleberg, Dianna R. Wynn, ISBN-10 : 0134402324, ISBN-13 : 9780134402321