APA-ийн эшлэл(7 дахь хэвлэлт)
Leach, P. (1983). Babyhood: Stage by stage, from birth to age two: how your baby develops physically, emotionally, mentally. Alfred A. Knopf.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Leach, Penelope. Babyhood: Stage by Stage, from Birth to Age Two: How Your Baby Develops Physically, Emotionally, Mentally. New York: Alfred A. Knopf, 1983.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Leach, Penelope. Babyhood: Stage by Stage, from Birth to Age Two: How Your Baby Develops Physically, Emotionally, Mentally. Alfred A. Knopf, 1983.
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