You can purchase:

Dallas Willard’s The Divine Conspiracy

https://www.amazon.com/Divine-Conspiracy-Rediscovering-Hidden-Life/dp/0007596545/ref=sr_1_1?crid=391PYO2792A65&keywords=divine+conspiracy+by+dallas+willard&qid=1581344292&sprefix=divine+con%2Caps%2C135&sr=8-1

and Christopher West’s Fill These Hearts

https://www.amazon.com/Fill-These-Hearts-Universal-Longing/dp/0307987159/ref=sr_1_1?crid=2TLYGE99KEYLB&keywords=fill+these+hearts+by+christopher+west&qid=1581344591&sprefix=fill+these%2Caps%2C139&sr=8-1