Grigg, A. O. (1981). Rating scales: Measures of central tendency and sample sizes. Transport and Road Research Laboratory.
Цитирование в стиле Чикаго (17-е изд.)Grigg, A. O. Rating Scales: Measures of Central Tendency and Sample Sizes. Crowthorne, Berkshire: Transport and Road Research Laboratory, 1981.
Цитирование MLA (9-е изд.)Grigg, A. O. Rating Scales: Measures of Central Tendency and Sample Sizes. Transport and Road Research Laboratory, 1981.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.