def cite(fmt='bibtex'):
    """
    Return the citation string of the slab module.

    Arguments:
        fmt (str): if bibtex, return the bibtex citation string, otherwise return the text reference
    """
    if fmt == 'bibtex':
        return """@article{Schönwiesner2021, doi = {10.21105/joss.03284}, url = {https://doi.org/10.21105/joss.03284}, year = {2021}, publisher = {The Open Journal}, volume = {6}, number = {62}, pages = {3284}, author = {Marc Schönwiesner and Ole Bialas}, title = {s(ound)lab: An easy to learn Python package for designing and running psychoacoustic experiments.}, journal = {Journal of Open Source Software}}"""
    return """Schönwiesner et al., (2021). s(ound)lab: An easy to learn Python package for designing and running psychoacoustic experiments. Journal of Open Source Software, 6(62): 3284, https://doi.org/10.21105/joss.03284"""