APA (7th ed.) Citation

English Language Services. (1950). Intensive course in english. English Languaje Services.

Chicago Style (17th ed.) Citation

English Language Services. Intensive Course in English. English Languaje Services, 1950.

MLA (9th ed.) Citation

English Language Services. Intensive Course in English. English Languaje Services, 1950.

Warning: These citations may not always be 100% accurate.