4 1 10 Modern English : a practical reference guide Marcella Frank Primary Author mixed material 0135940028 New jersey Prentice Hall 1972 modern_english.jpg.jpg Introduction To Reference Work, Vo.1 Basic Information Sources William A. Katz Primary Author mixed material 0070333335 USA McGra-Hill 1982 Introduction to Reference Work, volume II Reference Services and reference processes William A. Katz Primary Author mixed material 0070333335 USA McGra-Hill 1982 Buku Panduan untuk Mata Kuliah: Reference Work dan Bibliography Dengan sistem modular Soejono Trimo Primary Author mixed material 9795261366 jakarta bumi aksara 1997