Gaya APA
BOS, E.S.. (1973).
Cartographic principles in thematic mapping .
Enshede:
ITC Crtgraphi Dept.
Gaya Chicago
BOS, E.S..
Cartographic principles in thematic mapping.
Enshede:
ITC Crtgraphi Dept,
1973.
Text.
Gaya MLA
BOS, E.S..
Cartographic principles in thematic mapping.
Enshede:
ITC Crtgraphi Dept,
1973.
Text.
Gaya Turabian
BOS, E.S..
Cartographic principles in thematic mapping.
Enshede:
ITC Crtgraphi Dept,
1973.
Print.