Ellis, B. W. (2007). Covering ground: Unexpected ideas for landscaping with colorful, low-maintenance ground covers. Storey Pub..
Цитирование в стиле Чикаго (17-е изд.)Ellis, Barbara W. Covering Ground: Unexpected Ideas for Landscaping with Colorful, Low-maintenance Ground Covers. North Adams, Mass.: Storey Pub., 2007.
Цитирование MLA (8-е изд.)Ellis, Barbara W. Covering Ground: Unexpected Ideas for Landscaping with Colorful, Low-maintenance Ground Covers. Storey Pub., 2007.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.