Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 51-57

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 58-71

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 72-80

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 80-93

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 93-98

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 99-117

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 118-120

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 120-122

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 6, issue 2, pages 274-318

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 6, issue 3, pages 323-421

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 6, issue 3, pages 422-473

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 6, issue 3, pages 474

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 124-160

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 161

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 5, issue 2, pages 123

Published in Gardens' Bulletin, Straits Settlements, in 1930, in volume 6, issue 2, pages 165-273