APA (7th ed.) Citation

Grzybek, P., & Rusko, M. Letter, grapheme and (allo)phone frequencies: The case of slovak.

Chicago Style (17th ed.) Citation

Grzybek, Peter, and Milan Rusko. Letter, Grapheme and (allo)phone Frequencies: The Case of Slovak.

MLA (9th ed.) Citation

Grzybek, Peter, and Milan Rusko. Letter, Grapheme and (allo)phone Frequencies: The Case of Slovak.

Warning: These citations may not always be 100% accurate.