APA (7th ed.) Citation

(1970). Steps to spoken English: A graded course for spanish-speaking students. Book Four. Longman.

Chicago Style (17th ed.) Citation

Steps to Spoken English: A Graded Course for Spanish-speaking Students. Book Four. London: Longman, 1970.

MLA (9th ed.) Citation

Steps to Spoken English: A Graded Course for Spanish-speaking Students. Book Four. Longman, 1970.

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