APA (7 वां संस्करण) प्रशस्ति पत्र
Kopp, R. L. (1983). Where has grandpa gone?: Helping children cope with grief and loss : with read-aloud section for children, "Mommy, what does it mean to die?". Zondervan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Kopp, Ruth Lewshenia. Where Has Grandpa Gone?: Helping Children Cope with Grief and Loss : With Read-aloud Section for Children, "Mommy, What Does It Mean to Die?". Grand Rapids, Mich.: Zondervan, 1983.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Kopp, Ruth Lewshenia. Where Has Grandpa Gone?: Helping Children Cope with Grief and Loss : With Read-aloud Section for Children, "Mommy, What Does It Mean to Die?". Zondervan, 1983.
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