Smythies, B.E. (1964-11-17). "The birds of Mt Kinabalu and their zoogeographical relationships". Proceedings of the Royal Society of London. Series B. Biological Sciences (dalam bahasa Inggeris). 161 (982): 75–80. Bibcode:1964RSPSB.161...75S. doi:10.1098/rspb.1964.0079. ISSN0080-4649.
Smythies, B.E. (1964-11-17). "The birds of Mt Kinabalu and their zoogeographical relationships". Proceedings of the Royal Society of London. Series B. Biological Sciences (dalam bahasa Inggeris). 161 (982): 75–80. Bibcode:1964RSPSB.161...75S. doi:10.1098/rspb.1964.0079. ISSN0080-4649.
Smythies, B.E. (1964-11-17). "The birds of Mt Kinabalu and their zoogeographical relationships". Proceedings of the Royal Society of London. Series B. Biological Sciences (dalam bahasa Inggeris). 161 (982): 75–80. Bibcode:1964RSPSB.161...75S. doi:10.1098/rspb.1964.0079. ISSN0080-4649.