Cita APA (7th ed.)
Pyne, S. J. (2007). Grove Karl Gilbert: A great engine of research. University of Iowa Press.
Cita Chicago (17th ed.)
Pyne, Stephen J. Grove Karl Gilbert: A Great Engine of Research. Iowa City: University of Iowa Press, 2007.
Cita MLA (9th ed.)
Pyne, Stephen J. Grove Karl Gilbert: A Great Engine of Research. University of Iowa Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.