Цитирование APA (7-е изд.)
Cortina, R. D. d. l. (1977). Conversational Spanish in 20 lessons: Intended for self-study and for use in schools : with a simplified system of phonetic pronunciation. R. D. Cortina Co..
Цитирование в стиле Чикаго (17-е изд.)
Cortina, R. Diez de la. Conversational Spanish in 20 Lessons: Intended for Self-study and for Use in Schools : With a Simplified System of Phonetic Pronunciation. New York: R. D. Cortina Co., 1977.
Цитирование MLA (9-е изд.)
Cortina, R. Diez de la. Conversational Spanish in 20 Lessons: Intended for Self-study and for Use in Schools : With a Simplified System of Phonetic Pronunciation. R. D. Cortina Co., 1977.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.