Ruff, A. R. (2014). An author & a gardener: The gardens and friendship of Edith Wharton and Laurence Johnston. Windgather Press.
Chicago-referens (17:e uppl.)Ruff, Allan R. An Author & a Gardener: The Gardens and Friendship of Edith Wharton and Laurence Johnston. Oxford, [England] ; Havertown, Pennsylvania: Windgather Press, 2014.
MLA-referens (9:e uppl.)Ruff, Allan R. An Author & a Gardener: The Gardens and Friendship of Edith Wharton and Laurence Johnston. Windgather Press, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.