Predictable Revenue is considered canon for B2B/enterprise sales https://www.amazon.com/Predictable-Revenue-Business-Practices-Salesforce-com/dp/0984380213 http

Predictable Revenue is considered canon for B2B/enterprise sales https://www.amazon.com/Predictable-Revenue-Business-Practices-Salesforce-com/dp/0984380213 https://www.amazon.com/Predictable-Revenue-Business-Practice... But not sure how applicable to agencies it is so YMMV.