Não informado. (1953). Extracts from the proceedings of the Royal Horticultural Society. Royal Horticultural Society.
Chicago-viite (17. p.)Não informado. Extracts from the Proceedings of the Royal Horticultural Society. London: Royal Horticultural Society, 1953.
MLA-viite (8. p.)Não informado. Extracts from the Proceedings of the Royal Horticultural Society. Royal Horticultural Society, 1953.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.