- Avery Index to Architectural Periodicals
Citations to articles published worldwide on architecture, design and urban planning including landscape architecture and garden design and history.
- Garden, Landscape & Horticultural Index
Citations to articles on topics including horticulture, garden design and history, landscape, botany, ecology, and garden conservation.
- JSTOR
Full-text articles in the humanities and social sciences including coverage of landscape design, garden history, botany and ecology.