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

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.], 1982)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1982)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1993)

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

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 1998)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 2018)

The Gardens' bulletin, Singapore (Govt. Print. Off. [etc.], 2018)

Journal of the Straits Branch of the Royal Asiatic Society - Royal Asiatic Society of Great Britain; Ireland. Malaysian Branch. (1894)

Journal of the Straits Branch of the Royal Asiatic Society - Royal Asiatic Society of Great Britain; Ireland. Malaysian Branch. (1897)

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

Die Natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten, insbesondere den Nutzpflanzen, unter Mitwirkung zahlreicher hervorragender Fachgelehrten begründet - Engler, Adolf, 1844 -1930 (W. Engelmann, 1887)