Fulghum,Robert. (2007). What on earth have I done?: Stories, observations, and affirmations (NA.). ST-Martin's Press.
Style de citation Chicago (17e éd.)Fulghum,Robert. What on Earth Have I Done?: Stories, Observations, and Affirmations. NA. USA: ST-Martin's Press, 2007.
Style de citation MLA (9e éd.)Fulghum,Robert. What on Earth Have I Done?: Stories, Observations, and Affirmations. NA. ST-Martin's Press, 2007.
Attention : ces citations peuvent ne pas être correctes à 100%.