The last 5 editions of Belch & Belch include the sales/purchase/marketing funnel. The latest edition details: Belch, G.E. & Belch, M.A. 2021. Advertising and Promotion: An Integrated Marketing Communication Perspective. 12th Edition (International Student Edition). New York: McGraw-Hill. ISBN 9781260590210.
I also used this model for a couple of my papers, which are digital marketing related - all open access on ResearchGate.
Dash, Amelia Zafreen and Mero, Joel and Laukkanen, Tommi, From Suspect to Customer: Using Marketing Analytics Data to Study the Effectiveness of Digital Marketing Channels in the B2b Sales Funnel. Available at SSRN: https://ssrn.com/abstract=3935497