Souvestre, P. (1920). Slippery as sin. Stanley Paul.
Cita Chicago Style (17a ed.)Souvestre, Pierre. Slippery as Sin. London: Stanley Paul, 1920.
Cita MLA (9a ed.)Souvestre, Pierre. Slippery as Sin. Stanley Paul, 1920.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.