郄录平 & 王爽. (2011). 素描头像: Head portrait sketch. 龙门书局.
Chicago Style (17th ed.) Citation郄录平 and 王爽. 素描头像: Head Portrait Sketch. 龙门书局, 2011.
MLA (8th ed.) Citation郄录平 and 王爽. 素描头像: Head Portrait Sketch. 龙门书局, 2011.
Warning: These citations may not always be 100% accurate.