Leland, J. (2018). Happiness is a choice you make: Lessons from a year among the oldest old (First edition.). Farrar, Straus and Giroux.
Цитирование в стиле Чикаго (17-е изд.)Leland, John. Happiness Is a Choice You Make: Lessons from a Year Among the Oldest Old. First edition. New York: Farrar, Straus and Giroux, 2018.
Цитирование MLA (8-е изд.)Leland, John. Happiness Is a Choice You Make: Lessons from a Year Among the Oldest Old. First edition. Farrar, Straus and Giroux, 2018.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.