APA Style
Royal Geographical Society, London, Trigg, Roger. ().
The Royal Geographical Society .
:
.
Chicago Style
Royal Geographical Society, London, Trigg, Roger.
The Royal Geographical Society.
:
,
.
.
MLA Style
Royal Geographical Society, London, Trigg, Roger.
The Royal Geographical Society.
:
,
.
.
Turabian Style
Royal Geographical Society, London, Trigg, Roger.
The Royal Geographical Society.
:
,
.
.