Παραπομπή APA

Harry Collis. (2000). 101 American customs: Understanding American language and culture through common practices. Lincolnwood, Illinois: NTC.

Παραπομπή Chicago Style

Harry Collis. 101 American Customs: Understanding American Language and Culture Through Common Practices. Lincolnwood, Illinois: NTC, 2000.

Παραπομπή MLA

Harry Collis. 101 American Customs: Understanding American Language and Culture Through Common Practices. Lincolnwood, Illinois: NTC, 2000.

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