Parkinson, C. (2023). Illustrations, of Indian forest plants Part 4 – Hopea helferi (Dyer) Brandis, Hopea oblongifolia Dyer, Shorea floribunda Wall., Shorea assamica Dyer and Shorea sericeiflora fisher and Hutchinson. Manager of Publications, Government of India, Delhi.
Chicago-referens (17:e uppl.)Parkinson, C.E. Illustrations, of Indian Forest Plants Part 4 – Hopea Helferi (Dyer) Brandis, Hopea Oblongifolia Dyer, Shorea Floribunda Wall., Shorea Assamica Dyer and Shorea Sericeiflora Fisher and Hutchinson. Manager of Publications, Government of India, Delhi, 2023.
MLA-referens (9:e uppl.)Parkinson, C.E. Illustrations, of Indian Forest Plants Part 4 – Hopea Helferi (Dyer) Brandis, Hopea Oblongifolia Dyer, Shorea Floribunda Wall., Shorea Assamica Dyer and Shorea Sericeiflora Fisher and Hutchinson. Manager of Publications, Government of India, Delhi, 2023.