Mamchak, P. S., & Mamchak, S. R. (1990). The new encyclopedia of school letters. Englewood Cliffs, NJ: Prentice Hall.
Čikaški stil citiranjaMamchak, P. Susan, i Steven R. Mamchak. The New Encyclopedia of School Letters. Englewood Cliffs, NJ: Prentice Hall, 1990.
MLA način citiranjaMamchak, P. Susan, i Steven R. Mamchak. The New Encyclopedia of School Letters. Englewood Cliffs, NJ: Prentice Hall, 1990.
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