APA-viite (7. p.)

Coletta, A. J., & Coletta, K. (1986). Year 'round activities for two-year-old children. Center for Applied Research in Education.

Chicago-viite (17. p.)

Coletta, Anthony J., ja Kathleen Coletta. Year 'Round Activities for Two-year-old Children. West Nyack, N.Y: Center for Applied Research in Education, 1986.

MLA-viite (9. p.)

Coletta, Anthony J., ja Kathleen Coletta. Year 'Round Activities for Two-year-old Children. Center for Applied Research in Education, 1986.