Peterson, E. H. (1992). Under the unpredictable plant: An exploration in vocational holiness. William B. Eerdmans.
Lua i Stíl Chicago (17ú heag.)Peterson, Eugene H. Under the Unpredictable Plant: An Exploration in Vocational Holiness. Grand Rapids: William B. Eerdmans, 1992.
Lua MLA (9ú heag.)Peterson, Eugene H. Under the Unpredictable Plant: An Exploration in Vocational Holiness. William B. Eerdmans, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.