What is spermatogenesis? Plus diagrams.I need some help on spermatogenesis and oogenesis. I also need some diagrams. Please help.

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"Spermatogenesis is the process by which male
spermatogonia develop into mature spermatozoa, also known as a
sperm cell."

The cycle of the
spermatogenesis takes 64 days and can be broken down into two successive
sections:

Spermatocytogenesis:
primitive cells called spermatogonia increase in number by
mitosis.

Spermiogenesis:
spermatids change in form during spermiogenesis.  They change into the
streamline spermatozoa adapted for fertilization.

Oogenesis
is the process by which the ovum is developed. "Oogenesis consists of several
sub-processes: oocytogenesis, ootidogenesis and finally maturation to form an ovum.
Folliculogenesis is a separate sub-process that accompanies and supports all three
oogenetic sub-processes." 

Oocytogenesis:
starts with the process of developing oogonia. This stage is complete
either before or shortly after
birth.

Ootidogenesis: when the
primary oocyte develops into an ootid. This is achieved through the process of meiosis. 
The ootid eventually matures into an ovum.