Gaya APA
Kirschbaum, K., Hamaric, G.
(1982).
International yearbook of cartography 1982
.
Bonn:
Kirscbaum Verlag.
Gaya MLA
Kirschbaum, Klaus., Hamaric, Gilbert.
"International yearbook of cartography 1982".
Bonn:
Kirscbaum Verlag,
1982.
Text.