Annals of the Royal Botanic Garden, Calcutta - Royal Botanic Garden, Calcutta. (Bengal Secretariat Book Depot, 1893)

Botanisches Zentralblatt; referierendes Organ für das Gesamtgebiet der Botanik - Association internationale des botanistes. (G. Fischer [etc.], 1892)

Botanisches Zentralblatt; referierendes Organ für das Gesamtgebiet der Botanik - Association internationale des botanistes. (G. Fischer [etc.], 1880)

[Correspondence with J. A. Baker, Agricultural Office, Butterworth] - Botanic Gardens (Singapore) (1933)

The flora of the Malay Peninsula - Ridley, H. N. (Henry Nicholas), 1855 -1956 (L. Reeve & co., ltd, 1922)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1955)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1955)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1995)

Materials for a flora of the Malayan Peninsula - King, George, 1840 -1909 (1889)