Gaya APA
Joffe, I, L. (1975).
Understanding Maps Charts,Graphs,and Tables .
Belmont California:
Wodsworth Publising Company.Inc.
Gaya MLA
Joffe, Irwin, L..
"Understanding Maps Charts,Graphs,and Tables".
Belmont California:
Wodsworth Publising Company.Inc,
1975.
Text.