Kelz, H. P. (1978). Language planning in Germany - a model for the Philippines? Philippine Journal of Linguistics.
Citazione stile Chigago Style (17a edizione)Kelz, Heinrich P. "Language Planning in Germany - a Model for the Philippines?" Philippine Journal of Linguistics 1978.
Citatione MLA (9a ed.)Kelz, Heinrich P. "Language Planning in Germany - a Model for the Philippines?" Philippine Journal of Linguistics, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.