When citing an author with a hyphenated first name in order of appearance, use the first letter with period, then present the second letter preceded by a hyphen.
Author is Jean-Baptise Lamour Reference citation style is Lamour, J.-B.
Author is Ru-Jye Chuang Reference citation style is Chuang, R.-J.
Source: APA Publication Manual, 6th Edition, 6,27, p 184
If an author's first name is hyphenated, retain the hyphen and include a period after each initial. Do not put a space after the period of the first initial and the - preceding the second initial.