Gaya APA
Lansing, J, B., Blood, D.
(,965).
The travel market 1964 1965
(
1965)
.
:
Michigan : Survey Research Center.
Gaya MLA
Lansing, John, B., Blood, Dwight.
"The travel market 1964 1965".
1965
:
Michigan : Survey Research Center,
,965.
Text.