APA
The Royal Horticultural Society, . (1948). The rhododendron year book 1948 no.3. : The Royal Horticultural Society.
Chicago
The Royal Horticultural Society, . 1948. The rhododendron year book 1948 no.3. : The Royal Horticultural Society.
Harvard
The Royal Horticultural Society, . (1948). The rhododendron year book 1948 no.3. : The Royal Horticultural Society.
MLA
The Royal Horticultural Society, . The rhododendron year book 1948 no.3. : The Royal Horticultural Society. 1948.
