APA-viite

 Ansarian, L., &  Problem-based Language Learning and Teaching : An Innovative Approach to Learn a New Language. (2018).  Problem-based Language Learning and Teaching: An Innovative Approach to Learn a New Language.  Imprint: Springer.

Chicago-tyylinen lähdeviittaus

 Ansarian, Loghman, ja  Problem-based Language Learning and Teaching : An Innovative Approach to Learn a New Language.  Problem-based Language Learning and Teaching: An Innovative Approach to Learn a New Language.  Imprint: Springer, 2018.

MLA-viite

 Ansarian, Loghman, ja  Problem-based Language Learning and Teaching : An Innovative Approach to Learn a New Language.  Problem-based Language Learning and Teaching: An Innovative Approach to Learn a New Language.  Imprint: Springer, 2018.

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