Sankoff, Gillian. 1990. The grammaticalization of tense and aspect in Tok Pisin and Sranan. Language Variation and Change 2. 295–312.
@article{1337,
author = {Sankoff, Gillian},
journal = {Language Variation and Change},
key = {Sankoff 1990},
pages = {295–312},
title = {The grammaticalization of tense and aspect in Tok Pisin and Sranan},
volume = {2},
year = {1990}
}