Curtis Jenkins, G., & Newton, R. C. F. (1981). The first year of life. Churchill Livingstone.
Dyfyniad Arddull ChicagoCurtis Jenkins, Graham, and Richard C. F. Newton. The First Year of Life. Edinburgh ; New York: Churchill Livingstone, 1981.
Dyfyniad MLACurtis Jenkins, Graham, and Richard C. F. Newton. The First Year of Life. Churchill Livingstone, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.