R.R. Bowker Publishing Group. (1990). El-Hi Textbooks and Serials In Print 1990: Including Related Teaching Materials K-12 (118th ed.). R.R. Bowker.
Citação do estilo Chicago (17ª ed.)R.R. Bowker Publishing Group. El-Hi Textbooks and Serials In Print 1990: Including Related Teaching Materials K-12. 118th ed. New York: R.R. Bowker, 1990.
Citação MLA (9ª ed.)R.R. Bowker Publishing Group. El-Hi Textbooks and Serials In Print 1990: Including Related Teaching Materials K-12. 118th ed. R.R. Bowker, 1990.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.