APA

Boardman R., Di Giuliomaria S., . (1982). Sprindgboard I. English through communication. Oxford: Oxford univ. press.

Chicago

Boardman Roy, Di Giuliomaria Sirio, . 1982. Sprindgboard I. English through communication. Oxford: Oxford univ. press.

Harvard

Boardman R., Di Giuliomaria S., . (1982). Sprindgboard I. English through communication. Oxford: Oxford univ. press.

MLA

Boardman Roy, Di Giuliomaria Sirio, . Sprindgboard I. English through communication. Oxford: Oxford univ. press. 1982.