Gaya APA

Billings, H. et al (2002). adventures in reading intermediate / Henry Billing, Melisa Billing, Cristy M. Newman . New York: McGraw-Hill.

Gaya MLA

Billings, Henry. et al. "adventures in reading intermediate / Henry Billing, Melisa Billing, Cristy M. Newman". New York: McGraw-Hill, 2002. Text.