Quoted or or narrator's voice: He laid down his bundle and thought of his misfortune. "And just what pleasure have I found, since I came into this world?" he asked.

direct speech

Reported or normal : He laid down his bundle and thought of his misfortune. He asked himself what pleasure he had found since he came into the world.

indirect speech

Free indirect speech: He laid down his bundle and thought of his misfortune. And just what pleasure had he found, since he came into this world?

Stream of consciousness (narrative mode)

Transparent Minds

Cohn, Dorrit

Gingerich, Jon. . LitReactor. Retrieved 3 April 2013.

"The Benefits of Free Indirect Discourse"

Indirect speech in Danish. In: F. Coulmas ed. Direct and indirect speech. 219-254. Berlin: Mouton de Gruyter, 1986

Haberland, Hartmut

When Voices Clash. A Study in Literary Pragmatics. Berlin: Mouton de Gruyter, 2000.

Mey, Jacob L.

Prince, Gerald, Dictionary of Narratology

Stevenson, Randall, Modernist Fiction. Lexington: University of Kentucky, 1992.

Wood, James, How Fiction Works. New York: Picador, 2009.

Ron, Moshe, "Free Indirect Discourse, Mimetic Language Games and the Subject of Fiction", Poetics Today, Vol. 2, No. 2, Narratology III: Narration and Perspective in Fiction (Winter, 1981), pp. 17-39

The Literary Encyclopedia: Free Indirect Discourse

What is Free Indirect Discourse?: Oregon State Guide to English Literary Terms