Lorenzo Snow originally taught during October 1899 General Conference (emphasis added):

… I plead with you in the name of the Lord, and I pray that every man, woman and child who has means shall pay one-tenth of their income as a tithing. …

Chapter 12 of the 2013 Sunday School manual “Teachings of Presidents of the Church: Lorenzo Snow” reads:

… I plead with you in the name of the Lord, and I pray that every man, woman and child … shall pay one tenth of their income as a tithing. …