To cite metatest in publications use:

Hilde M. Huizenga, Ingmar Visser & Conor V. Dolan (2011). Hypothesis testing in random effects meta-regression. British journal of mathematical and statistical psychology, Vol. 64, 1-19.

Corresponding BibTeX entry:

@Article{, title = {Hypothesis testing in random effects meta-regression}, author = {Hilde M. Huizenga and Ingmar Visser and Conor V. Dolan}, journal = {British journal of mathematical and statistical psychology}, year = {2011}, volume = {64}, pages = {1-19}, }