APA (7e ed.) Bronvermelding

Steele, P. (1995). I wonder why...pyramids were built and other questions about ancient Egypt. Reader's Digest Young Families.

Chicago (17e ed.) Bronvermelding

Steele, Philip. I Wonder Why...pyramids Were Built and Other Questions About Ancient Egypt. Pleasantville, NY: Reader's Digest Young Families, 1995.

MLA (9e ed.) Bronvermelding

Steele, Philip. I Wonder Why...pyramids Were Built and Other Questions About Ancient Egypt. Reader's Digest Young Families, 1995.