Cita APA (7a ed.)

English Language Services. (1968). Reading & conversation for intermediate and advanced students of English: Abour the United States, its history, its people, its customs. English Language Services.

Cita Chicago Style (17a ed.)

English Language Services. Reading & Conversation for Intermediate and Advanced Students of English: Abour the United States, Its History, Its People, Its Customs. Washington: English Language Services, 1968.

Cita MLA (9a ed.)

English Language Services. Reading & Conversation for Intermediate and Advanced Students of English: Abour the United States, Its History, Its People, Its Customs. English Language Services, 1968.