Bibliographie de l'art des jardins is aimed at the landscape architect and the historian researching French gardening from the 15th Century on. Entries are organized by genre of writing (prose or poetry) and, within prose section, chronologically. Includes indexes to authors and architects.
Z5996 A1 G36 1989 (Ref)
Geschichte der Gartentheorie
SB470.5 W56 1989
Landscape Architecture: A Classified Bibliography: with Selected References on Parks and Playground Design, and Recreational Improvement
Z5996 A1 H3 (Vertical File)
Landscape Architecture Sourcebook: A Guide to Resources on the History and Practice of Landscape Architecture in the United States is "a guide describ[ing] English-language publications and other resources containing information on landscape architectural history and practice in the United States. It is a selective rather than comprehensive list, concentrating on recent texts" (from the introduction). For descriptions of chapter contents see p. 16. Entries include useful annotations.
Z5996.5 U6 L36 1997 (Ref)
Landscape, the Space Around Buildings: An Annotated Bibliography
Z5996 A1 G74 
Environmental Design: A Selected Annotated Bibliography
Z5942 N38  (Ref)