Multistage residual income - CFAI vs. Schweser

For multistage residual income valuation and an ROE that declines to a long-run level, it seems that the CFAI and Schweser notes are giving inconsistent formulas. As seen in equation 8, CFAI has the formula as (Pt - Bt) / (1 + r) but Schweser has it as (Pt - Bt) + Rt / (1 + r). Can someone please help clarify the correct one or explain what I am misunderstanding? Thank you!

Pt = market price at time t

Bt = book value per share at time t

Rt = residual income at time t

r = RoR

Hey all, just wanted to see if anyone had a similar question or anyone can help answer, thanks!