APA引文

Carlstrom, N. W., & Saport, L. (2002). Before you were born. Eerdmans Books for Young Readers.

芝加哥风格引文

Carlstrom, Nancy White, 与 Linda Saport. Before You Were Born. Grand Rapids, MI: Eerdmans Books for Young Readers, 2002.

MLA引文

Carlstrom, Nancy White, 与 Linda Saport. Before You Were Born. Eerdmans Books for Young Readers, 2002.