Leas, S. (1978). Time management: A working guide for church leaders. Abingdon Press.
Dyfyniad Arddull ChicagoLeas, Speed. Time Management: A Working Guide for Church Leaders. Nashville: Abingdon Press, 1978.
Dyfyniad MLALeas, Speed. Time Management: A Working Guide for Church Leaders. Abingdon Press, 1978.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.