diff --git a/Guía de usuario MSP430 GCC Toolchain.md b/Guía de usuario MSP430 GCC Toolchain.md
index 769bc9d..9922631 100644
--- a/Guía de usuario MSP430 GCC Toolchain.md	
+++ b/Guía de usuario MSP430 GCC Toolchain.md	
@@ -86,15 +86,15 @@ Ejemplo de código para hacer parpadear un led:
 
 void main(void)
 {
-	WDTCTL = WDTPW | WDTHOLD;		// stop watchdog timer
-	PM5CTL0 = 0x0000;				// disable high impedance mode
-	P1DIR = 0x01;   				//set up bit 0 of P1 as output
-	P1OUT = 0x00;  					//initialize bit 0 of P1 to 0
+	WDTCTL = WDTPW | WDTHOLD;	// stop watchdog timer
+	PM5CTL0 = 0x0000;		// disable high impedance mode
+	P1DIR = 0x01;   		//set up bit 0 of P1 as output
+	P1OUT = 0x00;  			//initialize bit 0 of P1 to 0
 	
-	for(;;){    					//loop
+	for(;;){    			//loop
 	    volatile unsigned int i;
-	    P1OUT ^= 0x01;  			//toggle bit 0 of P1
-	    							//Delay
+	    P1OUT ^= 0x01;  		//toggle bit 0 of P1
+	    				//Delay
 	    for(i=40000; i>0;){
 	        i--;
 	        __no_operation();
@@ -427,5 +427,10 @@ Instala la libreria libncursesw.so.5 para solucionar el problema mediante el com
 sudo apt-get install libncursesw.so.5
 ```
 
-------
+### **Referencia**
+
+<<<<<<< HEAD
+[1]  Texas Instruments.  Msp430-gcc-opensource gcc-open source compiler for msp microcontrollers, 2017.
 
+=======
+>>>>>>> parent of c6aec50 (Ordené y corregí algunas cosas del documento en general)